Thursday, 26 September 2024

FE Exam Tips: Answering Difficult Engineering Questions Pt. 1

FE Exam Tips: Answering Difficult Engineering Questions
Taking the Fundamentals of Engineering (FE) exam can be a daunting task for many engineering students and graduates. The breadth of knowledge required to pass this 6-hour-long exam covering a variety of engineering disciplines is vast, leading many examinees to spend months in preparation through reviewing engineering concepts, solving practice problems, and taking practice exams. However, even with thorough preparation, the FE exam can present unexpected challenges on test day. Difficult exam questions can catch students off guard, which can cause anxiety and stress during the testing period.
Having a structured game plan in approaching difficult questions can help ease nerves and optimize performance when encountering unclear or tricky concepts on the FE. This is the first in a two-part series of blogs providing tips and techniques for students to use when answering difficult questions during the FE exam. We will cover strategies such as flagging questions for later, logically working through multi-step problems, leveraging your strengths across knowledge domains, and maintaining a positive mindset. Read on to learn how to conquer tough exam questions on test day.
Assess the Question
When presented with a difficult question on the FE exam, before delving in too quickly, take a step back to fully assess what is being asked. Read the question prompt carefully and identify exactly what needs to be determined or calculated. Underline or highlight key parts of the question or any data that is provided. Then, take a few seconds to think - what engineering concept or formula will help me solve this? Trying to isolate the fundamental theory or relationship at hand is crucial, rather than jumping right into calculations. This aligns your thought process in the right direction from the start.
For multi-step quantitative problems, visualizing the scenario can assist with this assessment phase. Quickly sketch or draw the components involved, labeling any information given. This puts the abstract problem into a concrete perspective, clarifying the goal and known factors. Once the question is fully parsed apart, determining the proper formula or method will be more apparent. Rushing into solving before understanding all aspects of a difficult question often leads to mistakes or wasted time from improper approaches. So, take a breath, analyze what’s being asked, and set yourself up for success.
Work Through the Fundamentals
Encountering difficult questions in subject areas that you are less confident about, lean on the fundamentals to push through to the solution. Break down complex problems into simpler, more familiar components that you can grasp. For example, electromagnetism problems can be simplified using basic electromagnetic principles of oppositely charged particles, conductors, electric fields, etc. Reduce the problem to the basics within these core concepts. Identify any simplifying assumptions you can make to remove unnecessary complexity. Isolating these to walk through methodically will often help unlock the proper problem-solving path.
It can also help you think back to the most basic conceptual questions or example problems covered in your study resources for the topic. Difficult exam problems usually test the same principles but in more complex scenarios. If you are completely unsure of how to proceed, go back to the simple case and expand from there. The way core engineering principles interact and build upon each other will guide you through even nasty, difficult questions. Stick to the fundamentals and avoid getting overwhelmed by complexities.
Skip and Flag Questions
Be alert for any difficult questions that you are completely unsure of how to approach after a quick assessment. These types of questions are time sinks, distracting mental energy and motivating a random guessing approach. For these, it is often best to immediately skip them and flag for later return. Quickly flag it in your exam software, write a physical mark on your note board, or even note it on a written list of flagged questions you want to revisit. This will allow you to stay focused on questions you can solve confidently.
Getting mired down on a few difficult questions can derail your progress and timing for the exam. Make sure to budget your time across all knowledge areas accordingly, flagging questions that are too difficult to come back to later. Doing this allows you to maximize your score potential across the board. After returning to other questions, with more time and cleared thoughts, flagged questions may even seem less daunting. Just be sure to keep a close track of flags to circle back before the end of your allotted exam time.
Leverage Your Strengths
On the FE exam, answers to difficult questions in one topic area are sometimes obscured in the relationships to other topics. For example, a challenging dynamics problem may require understanding electrical circuit analysis to unlock the solution. When stuck on a question, think broadly across engineering disciplines and leverage your strengths. What other knowledge domains might offer clues to help solve this? The FE tests a breadth of interrelated engineering concepts, so find the connections.
Also, consider strengths in problem-solving approaches that could be applied. For challenging quantitative questions, is there an easier method you have experience with? Could a scalar-based shortcut help rather than brute-force vector calculations? Your strengths in certain simplification techniques or approaches to specific problem archetypes can enable breakthroughs.
Finally, is there another way to frame the question or check your work? Trying to come at the problem from a different perspective can provide surprisingly simple solutions to seemingly difficult questions. Play to your advantages in mental modeling ability, conceptual understanding, and problem-solving creativity.
Stay Positive
Maintaining a positive mindset when encountering difficult questions is critical for FE exam performance. Getting derailed mentally by tricky concepts can quickly snowball into a downward spiral of self-doubt and rushed guessing. Be ready to take a few deep breaths when prompted with confusing questions to clear your head. Remember that you studied and prepared for this and have the engineering knowledge to reason through it. Trust your mental process, isolate the fundamentals, and be open to creative approaches.
Also, be sure to pat yourself on the back for small successes throughout the day. Give yourself credit for everything you know you answered correctly so far, rather than dwelling on uncertainties. Have confidence in all the knowledge you possess. Motivate yourself to push through the final stages of the mentally taxing FE exam. Keep spirits high, knowing this is a milestone accomplishment in your engineering journey.
With the right problem-solving mindset and strategies, difficult questions on the FE exam can be overcome for success. Assess the core of the question, stick to the engineering fundamentals, strategically skip confusing questions, leverage your strengths, and stay positive. Put these tips into practice during your FE exam preparation and on test day. Trust yourself, your knowledge, and your abilities. You’ve got this!
Did you know School of PE offers tutoring if you need help mastering certain concepts on your FE exam? Our tutors are subject-matter and industry experts who teach only in their respective fields of expertise. They are experienced educators dedicated to helping our students succeed. Check out our tutoring options today and gain the confidence you need to pass on your first try!
About the Author: Khoa Tran

Khoa Tran is an electrical engineer working at the Los Angeles Department of Water and Power and is currently pursuing his master's in electrical Power from the University of Southern California. He is fluent in both Vietnamese and English and is interested in outdoor activities and exploring new things.

Thursday, 19 September 2024

FE Exam Week Survival Guide

FE Exam Week Survival Guide
The Fundamentals of Engineering (FE) exam is a pivotal milestone for any engineer or engineering student's career. Passing this exam is the first step to earning the Professional Engineer (PE) license, and it opens doors to enhanced career opportunities and higher earning potential. With so much riding on this one test, it's crucial to go into it fully prepared through diligent studying and review.
The week leading up to the FE exam is an anxious but exciting time. Ideally, you will have already put in months of hard work studying, and you can consider these final days as your last chance to brush up on concepts, work on your test-taking strategies, and get yourself into the right mindset. Structuring this critical week properly can give you the edge you need to pass. In this blog post, I'll share my tips on how to make the most of the week before the FE exam.
Get Organized
In the week before the FE exam, your study habits don’t need to kick into overdrive. In most cases, cramming everything in at the last-minute leads to stress and confusion. That's why staying organized is so important.
Make a study calendar that maps out which topics you'll review each day. Block out specific chunks of time for studying, breaks, meals, exercise, etc. Having a plan prevents you from wasting time figuring out what to do next. It also holds you accountable to ensure you don’t procrastinate.
Stock up on snacks, frozen meals, and anything else that will minimize chores and errands in your final week. Get all your FE exam supplies together in one place - calculator, pencils, passport, snacks, etc. Gather up all your FE study materials and notes and organize them by topic. The more structured you are, the easier it'll be to maximize your remaining prep time.
Review Key Topics
In your first pass through the FE exam content, you likely focused on understanding the main concepts and formulas. Now is the time to consolidate that knowledge. Go through each topic again with an eye for the types of problems and situations that are most likely to show up on the actual exam.
Make flashcards of must-know equations and definitions that you have struggled with. Work through practice problems without references to simulate exam conditions. Identify the topics you're shakiest on and spend extra time rehearsing those. The goal is to reinforce the key principles and relationships, so they become second nature.
Practice Memorizing Formulas
You won't get every formula memorized, but there are certain foundational ones you absolutely should know by heart. These include equations for dynamics, strength of materials, fluid mechanics, thermodynamics, and mathematics. Committing them to memory will save you precious minutes flipping through your reference manual on test day.
Make flashcards for the essential formulas and drill yourself on them throughout the week. Come up with mnemonic devices and other tricks to aid recall. Recite the formulas aloud regularly to strengthen the pathways in your brain. By exam day, you want these critical equations to roll off your tongue on command.
Take Practice Exams
Full-length practice exams are your best gauge of FE exam readiness. Try to take at least two to three practice tests under simulated conditions during your final week of preparation. Grade yourself honestly to reveal lingering weak areas. Review the problems you got wrong in-depth to understand where your knowledge is lacking.
Taking practice exams also familiarizes you with the exam format, timing, and question styles. Build your test-taking endurance so you're prepared to power through the grueling 5-hour and 30-minute exam. Having exposure to the real thing boosts confidence on exam day when those first questions pop up on the screen.
Simulate Test Conditions
To get the most accurate results from practice tests, you need to recreate exam conditions as closely as possible. Take the practice test in a quiet room free of distractions. Time yourself rigorously, and don't go over the allotted time limit. Avoid referencing notes or textbooks except for the reference manual. Program your calculator fully before starting. Sitting at a desk or table for the length of the exam gets you used to the physical demands.
Mimicking the real testing environment prevents nasty surprises about the pace, pressure, or computer interface. It also engrains the mindset and stamina required on exam day. Think of each practice test as a dress rehearsal to get your mental game sharper.
Brush Up on Mathematics
Rusty math skills are one of the biggest pitfalls for FE exam takers. Math topics like algebra, geometry, trigonometry, and calculus form the bedrock principles for solving engineering problems. Don't let careless mathematical mistakes trip you up.
Use your practice exams to identify where your math foundations need strengthening. Target those areas for extra review. Work through math problems without relying on calculators to sharpen your skills. Brush up on techniques for rearranging equations, handling exponents and radicals, graphing functions, and solving integrals. The faster you can handle the math portion, the more time you'll have for the complex engineering questions.
Review Weak Topics
After taking practice exams, analyze your wrong answers to reveal weak spots in your knowledge. Were there particular subjects or problem types that you consistently struggled with? Go back and thoroughly review those shaky topics.
Study the theory and work out plenty of practice problems to build mastery. Check textbook examples and YouTube videos to clarify concepts you're foggy on. Strengthening your weak areas can earn you more points on test day. Don't ignore identified deficiencies and hope they won't be on the exam. Shore up those gaps now before it's too late.
Learn Testing Strategies
Cracking the FE exam takes more than just content knowledge. You also need test-taking strategies tailored to this exam's unique format and constraints.
For multiple-choice questions, learn techniques like elimination and educated guessing. Brush up on strategies for solving word problems efficiently. Master time management strategies to pace yourself properly over the 5-hour and 30-minute endurance test.
On test day, you'll also need to navigate the computer interface confidently while managing anxiety. Getting familiar with the exam's logistics and psychological demands ensures they don't trip you up.
Maintain Physical and Mental Health
Don't neglect your physical and mental well-being amidst the exam stress. Lack of sleep, exercise, healthy food, and relaxation can nuke your focus, retention, and stamina. Here are some tips for taking care of yourself that crucial week:
  • Stick to a regular sleep schedule, turning in early if needed. Being well-rested boosts productivity.
  • Eat healthy brain foods like berries, nuts, whole grains, and fatty fish. Stay hydrated and limit caffeine.
  • Exercise daily to reduce anxiety, elevate mood, and boost thinking. Aim for 30-60 minutes a day.
  • Give your brain breaks by listening to music, going outside, or talking to friends. Don't burn yourself out.
  • Reduce social media and TV to limit distractions and mental clutter.
  • Turn to relaxation techniques like meditation, yoga, and deep breathing to calm nerves.
  • Get pep talks from loved ones to stay motivated.
  • Trust your preparation. Having confidence in yourself will help you succeed.
Staying balanced physically and emotionally keeps you firing on all cylinders for the final exam push. Don't neglect self-care in pursuit of perfection.
Conclusion
Preparing for the FE exam is a months-long endeavor. However, how you spend the final week before the test can make or break your chances of success. Follow these tips to make sure you cross the finish line strongly:
Get hyper-organized to maximize study time. Drill essential formulas until they're second nature. Take mock exams under real conditions. Review deficient areas. Maintain fitness and reduce stress. With smart, focused preparation, you'll walk into that test center ready to conquer the FE exam.
One of the best ways to gain confidence for your FE exam is to take an exam review course. School of PE’s comprehensive courses combine structured lectures with exclusive study materials to bring you the best chance of success on your exam. Register for a course today!
About the Author: Khoa Tran

Khoa Tran is an electrical engineer working at the Los Angeles Department of Water and Power and is currently pursuing his master's in electrical Power from the University of Southern California. He is fluent in both Vietnamese and English and is interested in outdoor activities and exploring new things.

Thursday, 12 September 2024

How to Pass the FE Exam on Your First Try

How to Pass the FE Exam on Your First Try
A crucial first step to becoming a licensed Professional Engineer (PE) in the United States is to pass the Fundamentals of Engineering (FE) exam and receive your Engineer in Training (EIT) certification. As someone who has successfully accomplished the first milestone, allow me to provide my personal strategies on how to adequately prepare and set yourself up for success.
Understanding the FE Exam Structure
First things first, let us familiarize ourselves with the structure of the FE; the exam is a 6-hour long computer-based test, organized into 5 major knowledge areas - mathematics, engineering economics, ethics, probability & statistics, engineering sciences, and the specific engineering discipline of your choice. Composed of 110 multiple-choice questions in total, with the exact breakdown of topics varying slightly for each specific engineering discipline. For example, the Chemical FE exam places more emphasis on material science and thermodynamics, while the Civil FE exam focuses more on structural analysis and construction. Keep this in mind when creating your study plan.
Creating a Winning Study Strategy
Now we know how the exam will be structured, step one is to start preparing early - at least 2-3 months in advance if possible. Don't wait until the last minute to start studying. For example, if you plan on taking the FE exam in mid-April, you should begin studying in early January. Obtain the official FE Reference Handbook from the NCEES website and spend time familiarizing yourself with the equations, tables, and graphs provided. This reference handbook is the single approved material you are allowed to use during the actual exam, so it is vital to know the contents well. You should also purchase an FE exam prep book that contains sample questions and practice exams. I recommend an NCEES practice exam and prep books from proven exam prep providers like School of PE.
Your First Month
In your first month of studying, focus on thoroughly reviewing the reference handbook, refreshing yourself on mathematical concepts like calculus and linear algebra, and taking an initial practice exam to benchmark your skills. This will identify weak areas for you to focus on. For example, I struggled with the engineering economics questions, so I spent extra time re-learning topics like the time value of money, depreciation, and inflation. In the second month, work through your prep book methodically, reading chapters and completing the practice problems related to each knowledge area. Really focus on practice problems similar to actual exam questions. In the final weeks before the exam, your prep should increase to solving 4-5 hours of practice problems per night. Take multiple timed, simulated exams to improve your pacing and stamina. I recommend taking at least two full-length practice exams.
Practice, Practice, Practice
In addition to individual subject review, practicing full-length exams is essential preparation. Simulated exams help build the mental endurance required for the 6-hour test. On exam day, you will receive an online agreement form and have 8 minutes of tutorial time to get accustomed to the format before the clock starts. The exam allows for one scheduled 50-minute break, which I recommend taking to refresh your brain before diving into the next section. In addition to the scheduled 50-minute break, you will have the flexibility to take unscheduled breaks as needed for restroom usage or grabbing a snack/water. However, it is prudent to be judicious when taking excessive unscheduled breaks, as the exam clock continues counting down during any time away from your computer. While essential personal needs should always be met, aim to limit unscheduled breaks to just 5-10 minutes so as not to squander valuable exam time. Make use of the restroom just before beginning a new section. With thoughtful time budgeting, you can satisfy necessary breaks without compromising your ability to complete this time-sensitive exam. Keep this timed exam structure in mind as you work practice tests at home so you are prepared for the pacing required on the actual test day.
Stress Management
Managing anxiety and stress is also hugely important when preparing for and taking the FE exam. Have confidence in your diligent preparation and utilize relaxation techniques leading up to exam day. Get adequate sleep, eat a nutritious breakfast, and do breathing exercises on the morning of the test. Arrive early at the testing center so you do not feel rushed. I brought a bottle of water, a snack, and earplugs to aid my comfort and focus during the exam. When you begin taking the test, quickly skim through the whole thing first to allocate your time appropriately before diving into the details. Flag questions you do not know immediately and come back to them later so you don't get bogged down. With thorough preparation and remaining calm on exam day, you will be primed for success.
Conclusion
While the FE exam is certainly difficult, passing it simply requires diligent preparation over 2-3 months, learning from practice problems and simulated exams, and not losing hope. If you don't pass on your first try, thoroughly review areas needing improvement per your diagnostic report. Then, sign up and study again using what you learned. Many examinees pass their second or third attempts with improved knowledge of their weak points. With smart preparation strategies tailored to your needs and perseverance, you will be an FE exam success story before you know it.
Are you ready to pass your FE exam on your first try? Enroll in one of our comprehensive FE exam prep courses today.
About the Author: Khoa Tran

Khoa Tran is an electrical engineer working at the Los Angeles Department of Water and Power and is currently pursuing his master's in electrical Power from the University of Southern California. He is fluent in both Vietnamese and English and is interested in outdoor activities and exploring new things.

Thursday, 5 September 2024

From Pyramids to Skyscrapers: The History of Engineering

The History of Engineering
Engineering has been a fundamental driver of human progress for thousands of years. From ancient civilizations to the technological marvels of today, engineers have pushed boundaries to imagine, design, and create remarkable structures, machines, systems, and processes that have shaped the modern world.
Early Engineering
Egypt and Mesopotamia
The foundations of engineering can be traced back to the great public works and military achievements of antiquity. The construction of the pyramids of ancient Egypt, spanning almost a century, represented a tremendous engineering feat. The massive blocks, precisely cut and positioned to astronomical alignments, still leave archaeologists perplexed as to the methods used. In Mesopotamia, irrigation systems (Figure 1) enabled large-scale agriculture through the controlled distribution of water (Crabben, 2023). This knowledge spread to early civilizations around the world.
Mesopotamia Irrigation Canals
Figure 1: Mesopotamia Irrigation Canals
Ancient Rome
The ancient Romans developed civil engineering on an epic scale. They built over 50,000 miles of roads (International Museum of the Horse, n.d.) and aqueducts like the Pont du Gard (Figure 2) that transported water hundreds of miles (Desbordes & Lescure, n.d.). The iconic Colosseum and Pantheon employed arches and concrete to allow huge enclosed public spaces. Fortifications and siege weapons showcased Roman military engineering prowess.
Pont Du Gard (Roman Aqueduct)
Figure 2: Pont Du Gard (Roman Aqueduct)
Europe and the Renaissance
Medieval engineering advanced with the construction of elaborate cathedrals and fortresses in Europe. Building ever-higher and larger cathedrals required innovations in columns, arched entries, flying buttresses, and intricate stonework. Technologies like water wheels and windmills were adopted for early industry. Late Medieval polymaths like Leonardo da Vinci embodied the guild artisans of the time period, displaying engineering creativity through detailed drawings and models.
The Renaissance accelerated engineering progress through the application of science and mathematical principles. Artists and architects carefully studied proportions and perspective, creating some of the great masterpieces of the era. Movable type printing using metal blocks revolutionized mass communication. Highly varied technical treatises were widely published. Exquisite mechanical devices and automatons were built to demonstrate principles of physics and mechanics.
Pivot Point: Industrial Revolution
The Industrial Revolution marked the transformation into modern engineering. Steam power opened entirely new possibilities for manufacturing, transportation, and large-scale machinery. Civil engineers designed roads, railways, bridges, tunnels, ports, and other infrastructure to support travel and commerce. The telegraph and telephone connected distant parts of the world with communication networks. Electrical engineering soon emerged to capitalize on electricity for lighting, motors, and appliances.
Twentieth-century engineering produced an astounding array of technologies that changed everyday life in the automobile/air travel, electronic, and nuclear industries.
Engineering’s Effects on Industry
Automobile
Automobiles and air travel became ubiquitous. In the early 20th century, cars and planes were novelties accessible only to the wealthy. However, mass production techniques pioneered by Henry Ford's Model T made automobiles affordable for the average American. By 1930, 23 million cars were registered in the U.S., with one car for every five Americans (National Museum of American History Behring Center, n.d.). The growing roadway infrastructure allowed driving to become a part of everyday life.
Ford with his early Model T
Figure 3: Ford with his early Model T
Air Travel
Similarly, air travel transformed from daredevil barnstormers to comfortable and common public transportation. The Douglas DC-3, introduced in 1936, could carry 21 passengers on a transcontinental flight across the U.S. within 15 hours (The Geography of Transport Systems, n.d.). By 1958, over 60 million Americans had traveled by air. Cars and planes had evolved from playthings of the rich to ubiquitous technologies relied upon by the masses for business and pleasure.
Douglas DC-3
Figure 4: Douglas DC-3
Electronics
Radio, television, and later computers provided entertainment and information globally. Huge dams and power grids delivered electricity across nations. Electronics amplified communications, computing, and control systems. The invention of the vacuum tube in the early 20th century enabled a breakthrough in electronics (Smil, 2019). Radios using vacuum tubes became extremely popular, allowing live broadcasting of speech, music, and news into homes across the nation. Later, the development of television brought both sound and dynamic visuals delivered over airwaves. Telephone networks also transitioned from operator-assisted switchboards to automated systems, enabling more conversations simultaneously through electronic amplification and switching. In World War II, advanced electronics like radar and analog computers provided tactical advantages. After the war, electronics research produced the transistor, allowing computing power to advance from room-sized mainframes to minicomputers and, eventually, microprocessors (Computer History Museum, n.d.). The space race drove further miniaturization of electronics. By the end of the 20th century, digital communications networks, computers, and consumer devices had electronics integrated into nearly every aspect of life.
Nuclear
Nuclear engineering emerged from physics into a practicable option for power generation as well as destructive weapons. In the 1930s, physicists discovered that the fission of uranium could yield tremendous amounts of energy. This was demonstrated practically in 1942 with the creation of the first nuclear reactor at the University of Chicago (U.S. Department of Energy, n.d.). Only a few years later, this principle was applied to develop the atomic bombs (Manhattan Project) dropped on Hiroshima and Nagasaki, demonstrating the immense destructive potential of nuclear physics.
Manhattan Project during testing
Figure 5: Manhattan Project during testing
After the war, nuclear technology was applied to peaceful purposes. In 1951, the first nuclear power plant was opened in Idaho, and it was able to provide electricity to the local region. Over the next decades, nuclear power expanded to become a major source of energy worldwide. Nuclear naval propulsion also emerged from physics research, with the USS Nautilus launching in 1954 as the first nuclear-powered submarine (Department of Energy, n.d.). So, within just two decades, nuclear engineering had branched from physics theories into both powerful weapons and practical generators of electricity and propulsion. The principles of physics were turned into real-world applications that would change energy and warfare.
Pivot Point: Information Age
The Information Age has accelerated the integration of all engineering disciplines. Software engineering made computers flexible and accessible to the masses. The internet networked the world like never before. Biomedical engineering harnessed technology to improve human health and enhance lives. Environmental engineering works to sustainably manage the planet’s resources. Nanotechnology manipulates matter at molecular scales with vast potential.
What Does the Future Hold?
Looking forward, the possibilities seem endless. But even with infinite computing power, engineering innovation requires human creativity, problem-solving, and perseverance. The grand challenges of the future, whether climate change, accessible healthcare, cybersecurity, or space exploration, will rely on engineers pushing boundaries to make the seemingly impossible - possible. The enduring legacy of engineering history lies in working to uplift humanity through technology.
References
Computer History Museum. (n.d.). 1947: Invention of the Point-Contact Transistor | The Silicon Engine. Computer History Museum. Retrieved September 14, 2023, from https://www.computerhistory.org/siliconengine/invention-of-the-point-contact-transistor/
Crabben, J. v. d. (2023, March 22). Agriculture in the Fertile Crescent & Mesopotamia. World History Encyclopedia. Retrieved September 14, 2023, from https://www.worldhistory.org/article/9/agriculture-in-the-fertile-crescent--mesopotamia/
Department of Energy. (n.d.). Timeline of Events: 1951 to 1970. Department of Energy. Retrieved September 14, 2023, from https://www.energy.gov/lm/timeline-events-1951-1970
Desbordes, M., & Lescure, M. (n.d.). 40 centuries of history. Le Pont du Gard. Retrieved September 14, 2023, from https://pontdugard.fr/en/discover/history
The Geography of Transport Systems. (n.d.). Selected Transcontinental DC-3 Routes, Late 1930s. The Geography of Transport Systems. Retrieved September 14, 2023, from https://transportgeography.org/contents/chapter5/air-transport/continental-dc3-routes-1930s/
International Museum of the Horse. (n.d.). Roman Roads. International Museum of the Horse. Retrieved September 14, 2023, from https://imh.org/exhibits/past/legacy-of-the-horse/roman-roads/
National Museum of American History Behring Center. (n.d.). Americans Adopt the Auto | National Museum of American History. National Museum of American History. Retrieved September 14, 2023, from https://americanhistory.si.edu/visitor-guides/america-move/americans-adopt-auto
Smil, V. (2019, January 24). During the 20th Century, Vacuum Tubes Improved in a Moore's Law-Like Way. IEEE Spectrum. Retrieved September 14, 2023, from https://spectrum.ieee.org/during-the-20th-century-vacuum-tubes-improved-in-a-moores-lawlike-way
U.S. Department of Energy. (n.d.). Manhattan Project: Fission Comes to America, 1939. OSTI.GOV. Retrieved September 14, 2023, from https://www.osti.gov/opennet/manhattan-project-history/Events/1890s-1939/fission_america.htm
About the Author: Khoa Tran

Khoa Tran is an electrical engineer working at the Los Angeles Department of Water and Power and is currently pursuing his master's in electrical Power from the University of Southern California. He is fluent in both Vietnamese and English and is interested in outdoor activities and exploring new things.