AUG 13, 2018 3:34 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
JAN 27, 2020
Plants & Animals
JAN 27, 2020
This Octopus Emerges From the Water in Search of Food
Most octopuses live and breathe underwater, just like the vast majority of other marine animals. But this octopus endemic to Australia has a special abilit...
FEB 24, 2020
Space & Astronomy
FEB 24, 2020
What Will Space Tourism Be Like in the Future?
Space tourism that something that, at one point, was once considered to be a thing of science fiction. While only a limited number of people not registered...
FEB 24, 2020
Plants & Animals
FEB 24, 2020
These Pelicans Aren't After Fish
Pelicans are seabirds renowned for their unique bills, which encompass a rather discernible throat pouch that makes capturing and swallowing fish a cinch....
MAR 15, 2020
Space & Astronomy
MAR 15, 2020
This Exoplanet Rains... Iron!?
Many of us take the Earth and its many ‘normal’ characteristics for granted, but there are so many exoplanets in the universe around us with th...
MAR 30, 2020
Plants & Animals
MAR 30, 2020
Packs of Humboldt Squid Rise From the Deep to Feed
Deep-sea dwellers are among some of the most intriguing marine creatures in the world, partly because it isn’t very often that we get the opportunity...
APR 01, 2020
Health & Medicine
APR 01, 2020
Saliva Test can Measure THC Levels in Impaired Drivers
Now that cannabis products are legal in many states across the U.S., law officials need a quick and reliable way to test potentially impaired drivers. As s...
Loading Comments...