AUG 13, 2018 03:34 PM PDT

What does sunscreen look like with a UV camera?

 

Have you ever wondered if there’s really a difference between SPF 30 and SPF 50? You’re not the only one. YouTuber Physics Girl set out with the guys behind YouTube channel How To Make Everything to figure out how various strengths of sunscreens differ – using a UV camera!

As we know, ultraviolet light has a shorter wavelength and higher frequency than other light that is visible to our eyes and it can ultimately do damage to our DNA and cells and even cause skin cancer. Which is why we use sunscreen in the first place – to make sure that those UV rays aren’t making their way into our bodies.

The hypothesis that Physics Girl starts out with is that the stronger SPF sunscreens should show up darker on her skin while looking through the UV camera. That’s because the UV camera makes things that are absorbing UV light look darker. The stronger the SPF, the more UV light absorbed into the sunscreen (and not into your body), the darker it appears in the camera. Do you think her hypothesis makes sense? Watch the video to find out the results!

About the Author
  • Kathryn is a curious world-traveller interested in the intersection between nature, culture, history, and people. She has worked for environmental education non-profits and is a Spanish/English interpreter.
You May Also Like
OCT 13, 2018
Videos
OCT 13, 2018
Why you shouldn't give a baby water
Did you know that babies shouldn't drink water before they are at least six months old? That's because, while human adults are composed of 55-60% w...
OCT 18, 2018
Videos
OCT 18, 2018
Tips on Bringing Stem Cells out of Deep Freeze
Once a subject of intense debate, stem cells have made their way into the research laboratory....
OCT 20, 2018
Videos
OCT 20, 2018
Understanding how the Immune System is Controlled
Scientists are trying to learn more about a gene, PTPN22, that is especially critical to the immune system....
OCT 22, 2018
Space & Astronomy
OCT 22, 2018
What Are Those Strange Objects Orbiting Sagittarius A*?
Sagittarius A* is a black hole that resides at the center of the Milky Way. Astronomers estimate that Sagittarius A* sports the same amount of mass as four...
NOV 04, 2018
Space & Astronomy
NOV 04, 2018
These Planets Have More Extreme Weather Than Earth
You might think that the weather can get nasty here on Earth, but it pales in comparison to the weather on other planets in the solar system. The weather c...
NOV 11, 2018
Health & Medicine
NOV 11, 2018
Stop Procrastinating, It's Not Good for You
Procrastination is common, but some people procrastinate much more than others. Those who do it persistently probably exhibit something known as chronic pr...
Loading Comments...