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
MAY 04, 2020
Plants & Animals
A Capuchin Monkey's Curiosity Can Sometimes Cloud its Judgement
MAY 04, 2020
A Capuchin Monkey's Curiosity Can Sometimes Cloud its Judgement
Capuchin monkeys are highly intelligent animals, but they’re also rather curious. They’ve adapted to communi ...
MAY 14, 2020
Earth & The Environment
NASA's ICESat-2 Mission Reports Changes in Arctic Ice Thickness
MAY 14, 2020
NASA's ICESat-2 Mission Reports Changes in Arctic Ice Thickness
Arctic sea ice is vital to Earth's climate system, and recent decades have seen troubling declines in sea ice due to ...
MAY 17, 2020
Plants & Animals
Male Garter Snakes Trick Others to Improve Own Mating Success
MAY 17, 2020
Male Garter Snakes Trick Others to Improve Own Mating Success
After spending several months in hibernation during the winter, male garter snakes emerge from the underground where the ...
MAY 26, 2020
Earth & The Environment
"Green Snow" Expected to Increase in Antarctica
MAY 26, 2020
"Green Snow" Expected to Increase in Antarctica
When Antarctica comes to mind, the imagery probably includes a vast, frozen, and barren landscape. However, red and gree ...
JUN 14, 2020
Space & Astronomy
SpaceX Launches First Rideshare Mission with Great Success
JUN 14, 2020
SpaceX Launches First Rideshare Mission with Great Success
If you’ve been following SpaceX, then you’d know that the commercial space company has been launching quite ...
JUL 13, 2020
Neuroscience
Can COVID-19 Be Diagnosed by Vocal Patterns?
JUL 13, 2020
Can COVID-19 Be Diagnosed by Vocal Patterns?
Researchers from the Lincoln Laboratory have found early evidence that subtle changes in peoples' voices may indicat ...
Loading Comments...