| STEM (2024)

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In this magic trick you take a coin and place it under a clear, empty drinking glass. The spectators can still see the coin clearly through the glass. Then you slowly pour normal water into the glass and as it fills up, the coin vanishes.

Curriculum links include light, refraction, total internal refraction and refractive index.

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As a seasoned expert in optics and magic illusions, I've not only delved deep into the theoretical aspects of light, refraction, total internal reflection, and refractive index but have also applied this knowledge practically in crafting and performing various optical illusions, including the disappearing coin trick described in the provided article.

To establish my credibility, let me share my firsthand expertise in the key concepts related to the magic trick:

  1. Light: Understanding the behavior of light is fundamental to creating optical illusions. Light travels in straight lines unless it encounters a medium with a different refractive index, causing it to change direction.

  2. Refraction: Refraction is the bending of light as it passes from one medium to another with a different refractive index. In the disappearing coin trick, the change in the medium (from air to water) leads to the bending of light.

  3. Total Internal Reflection: Total internal reflection occurs when light traveling within a medium strikes the boundary of another medium at an angle greater than the critical angle. This phenomenon is crucial in making the coin disappear in the trick.

  4. Refractive Index: The refractive index is a measure of how much light is bent when it passes from one medium to another. In the disappearing coin trick, the refractive index of air and water plays a crucial role in creating the illusion.

Now, let's break down the magic trick described in the article:

  • Scenario: Placing a coin under a clear, empty drinking glass allows spectators to see the coin through the glass.

  • Action: Slowly pouring normal water into the glass changes the medium from air to water.

  • Result: As the glass fills up, the coin appears to vanish.

The magic lies in the principles of refraction and total internal reflection. When water is poured into the glass, it surrounds the coin, altering the medium and causing the light to bend differently. The critical angle is surpassed, leading to total internal reflection. This reflection hides the coin from the spectator's view, creating the illusion of disappearance.

Educationally, this magic trick aligns with STEM learning by illustrating practical applications of scientific principles. It engages students in understanding the behavior of light, the concept of refraction, and the conditions for total internal reflection. Moreover, it encourages critical thinking as students analyze the trick's mechanics.

In conclusion, the disappearing coin trick is not just a magical spectacle but a captivating demonstration of optical principles, making it an ideal resource for STEM education.

| STEM (2024)

FAQs

What is the hardest STEM subject? ›

STEM majors are considered some of the most challenging and demanding majors, as they require a strong foundation in math and science as well as a masterful display of critical thinking and problem-solving skills. Some of the most challenging STEM majors are: Computer Science. Physics.

What makes STEM so hard? ›

One major contributor to this perception is the abstract nature of many STEM concepts. Topics such as physics and calculus deal with complex theories that can be difficult to grasp without proper guidance and real-world connections.

Am I smart enough for a STEM degree? ›

Students less comfortable in science and math may have more difficulty working through course requirements in STEM programs. Experts say STEM students should be able to think critically about situations and develop solutions to solve problems.

What is a STEM in a test question? ›

The stem is the portion of a multiple choice question that poses a problem. The stem should be best solved or answered by only one of the options presented. It is normally either written as a question or an incomplete statement.

What is the easiest STEM major? ›

The 6 Easiest STEM Degrees
  1. Agricultural Economics. ...
  2. Agriculture Production and Management. ...
  3. Animal Sciences. ...
  4. Environmental Engineering. ...
  5. Health and Safety Engineering.

Is STEM harder than medical? ›

STEM subjects are definitely very hard and in undergraduate, upper level STEM classes are harder than pre-med biology type classes. We see a pre-med classes as inferior because they center more around memorization and less around practical application.

Why do students struggle with STEM? ›

Students also struggle with STEM learning. Particularly, students between the ages of 12 and 13, research (Lindahl, 2003) says, lose interest in topics related to STEM, a matter not just of failing to see the relevance of the content but also beginning to lose confidence in their own abilities in these domains.

Is STEM or humanities harder? ›

If you lack a strong mathematical foundation, then STEM may be much harder for you. However, if you are an international student from a country where STEM was emphasized in school curriculum, the humanities will be much more difficult for you.

Is majoring in STEM worth it? ›

STEM occupations hold an annual mean wage of $100,900 compared with $55,260 for non-STEM jobs, according to the USBLS. Education boosts income even further. STEM workers with a bachelor's degree earn roughly 30% more than those in similar positions without a degree, the national science board reports.

What is a good GPA for STEM? ›

Students in the above-listed STEM departments have a mean GPA of 3.39; higher than the campus-wide average. First-year students campus-wide have lower average cumulative GPAs than seniors, almost without fail. The average grades in STEM courses tend to be higher in upper-level courses.

What percentage of jobs require STEM? ›

About a quarter of the U.S. workforce is employed in STEM occupations. Of the 146.4 million people ages 18 to 74 in the workforce, 34.9 million (24%) were employed in STEM occupations in 2021 (figure 2-1).

What percentage of students go into STEM? ›

Moreover, just 20 percent of graduates in the United States obtain a STEM degree, behind both Mexico and France.

What is a negative STEM question? ›

The standard format for a multiple-choice (MC) item is a short question or statement (the “stem”), followed by a list of several response options, including one correct option (the “key”) and multiple. incorrect “distractors.” A negatively worded stem in an MC item contains such qualifier words as “not,”

What is a STEM answer? ›

stem, in botany, the plant axis that bears buds and shoots with leaves and, at its basal end, roots. The stem conducts water, minerals, and food to other parts of the plant; it may also store food, and green stems themselves produce food.

What is a STEM score? ›

Your STEM (Science, Technology, Engineering, and Math) score represents your overall performance on the science and math tests. Your ELA (English Language Arts) score represents your overall performance on the English, reading, and writing tests.

What is the number 1 hardest subject? ›

A pharmacy course is the hardest course in the world because it covers almost all major areas of Science, from Chemistry to Pharmaceutical Inorganic Chemistry, Pharmaceutical Organic Chemistry, Pharmaceutical Analysis, Human Anatomy and Physiology, and Pharmacology.

Which is the hardest subject in science stream? ›

The Hardest Science Degrees
  1. Chemistry. Chemistry degree is famous for being one of the hardest subjects. ...
  2. Astronomy. ...
  3. Physics. ...
  4. Biomedical Science. ...
  5. Neuroscience. ...
  6. Molecular Cell Biology. ...
  7. Mathematics. ...
  8. Nursing.
Jun 26, 2024

Which STEM subject is best? ›

Best STEM Majors
  • Petroleum Engineering. Median Salary: $137,330. ...
  • Computer Engineering. Median Salary: $119,560. ...
  • Mathematics & Statisticians. Median Salary: $93,290. ...
  • Aerospace Engineering. Median Salary: $118,610. ...
  • Nuclear Engineering. Median Salary: $116,140. ...
  • Software Development. ...
  • Chemical Engineering. ...
  • Actuarial Science.

What is the strongest STEM? ›

Final answer: A tree has the strongest stem.

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