The biological mechanism of sunburn – the reddish, painful, protective immune response from ultraviolet (UV) radiation – is a consequence of RNA damage to skin cells, report researchers at the University of California, San Diego School of Medicine and elsewhere in the July 8, 2012 Advance ...
Those symptoms looked similar to what people go through when they are suffering from withdrawal from heroin. The new data is “fascinating”, David Fisher said. Still, she says, the new study falls short of proving the mice had become addicted to UV light. “Addiction” ...
Three eye specialists explain what blue light is, if it’s harmful to eye health and if your eyes need special lenses when scrolling on your phone.
The top layer is electron rich, the bottom layer, electron poor. When you shine light on the top layer, electrons leap up from the bottom layer to the top, making a voltage that can drive current through an external circuit—so providing what we think of as solar power. Read more about...
That's why computers also have what's called auxiliary memory (or storage) as well, which remembers things even when the power is disconnected. In a typical PC or laptop, auxiliary memory is generally provided by a hard drive or a flash memory. Auxiliary memory is also called external ...
What is worse, a weak beam of ultraviolet light, or an intense beam of infrared light? Which of the following has higher energy: IR light having a wavelength of 10 mu m or 20 mu m? The infrared spectrum for HCN (a linear molecule) was obta...
a Composites with polyester: When biopolyester is combined with lignophenol, its elongation rate gets twenty times higher. The composites exhibit great thermal stability and biodegradability, and absorb ultraviolet light. They can also be quantitatively re-separated back into lignophenol...
more likelytohavecongenitalmalformationsininfants. VitaminD-bonesguards VitaminDisafatsolublevitaminthathasfivecompoundsand iscloselyrelatedtovitaminD2andvitaminD3.Theyhavethree characteristics:theyarefoundinsomenaturalfoods;after exposuretoultravioletlight,cholesterolinthebodycanbe convertedintovitaminD.First,themain...
Here's what to know to stay safe. Why is looking at a solar eclipse dangerous? Looking at the sun — even when it's partially covered like during an eclipse — can cause eye damage. There is no safe dose of solar ultraviolet rays or infrared radiation, saidDr. Yehia Hashad, an ophth...
Radio waves are similar to visible light in that A. both travel at the same speed in a vacuum. B. both have wavelengths longer than ultraviolet light. C. A and B D. both have wavelengths shorter than What is the velocity of all electromagnetic waves in a vacuum? 1) The veloc...