Free Republic
Browse · Search
General/Chat
Topics · Post Article

To: Yo-Yo
the researchers were able to create a “white paint” that doesn’t absorb UV radiation.
5 posted on 11/08/2018 1:15:12 PM PST by Red Badger (FNo-platform us all you want. Ban us all you want. Smear us all you want. You canÂ’t stop an idea...)
[ Post Reply | Private Reply | To 2 | View Replies ]


To: Red Badger

What’s really impressive, here, is that they have achieved high reflectivity in the visible wavelengths AND high emissivity in the thermal wavelengths. Clever to achieve it with foam.


11 posted on 11/08/2018 1:20:58 PM PST by NorthMountain (... the right of the peopIe to keep and bear arms shall not be infringed)
[ Post Reply | Private Reply | To 5 | View Replies ]

To: Red Badger
the researchers were able to create a “white paint” that doesn’t absorb UV radiation.

Here's the original YouTube video where that image with the ultraviolet caption originated from. In the video the image is clearly from an infrared camera, with a temperature scale on the right side showing the correlation between the false colors and temperature. You can watch the entire video, but I have cued it up to the relevant shot here:

https://youtu.be/8lTdZ-U0Qm8?t=107

The underlying abstract paper does mention UV reflectance as an advantage of the coating not breaking down after prolonged exposure to sunlight.

But the captioned image is NOT of ultraviolet light. It is of near infrared.

18 posted on 11/08/2018 1:47:48 PM PST by Yo-Yo (Is the /sarc tag really necessary?)
[ Post Reply | Private Reply | To 5 | View Replies ]

Free Republic
Browse · Search
General/Chat
Topics · Post Article


FreeRepublic, LLC, PO BOX 9771, FRESNO, CA 93794
FreeRepublic.com is powered by software copyright 2000-2008 John Robinson