Blue light is a high-energy visible light that is emitted by electronic devices and artificial lighting sources. It has a short wavelength and can penetrate deep into the eye, potentially causing eye strain, dryness, and fatigue. Additionally, exposure to blue light, especially in the evening or...
The heaviest colour is red, then blue, green, orange, yellow and white. The scientist told us that colours also have smell. Can you smell the colour? Of course not. Then why did the scientist say so? That is because every colour stands for a kind of light with a certain wavelength ,...
The scientist told us that colors also have smell. Can you smell the color? Of course not. Then why did the scientist say so? That is because every color stands for a kind of light with a certain wavelength,(波长). It reaches our brain through sense organs(感官). ...
2.考查细节理解题,根据That is because every colour stands for a kind of light with a certain wavelengh,and it reaches our brain through sense organs.可知:颜色有气味,这是因为每一种颜色代表一种具有一定波长的光,从而通过感觉器官达到我们的大脑。所以C选项是正确的。3.考查推理判断题,根据According to...
Why? A scientist found that di任erent colours have different weight in a man's mind. So he did many tests and at last he found that every colour has its own weight in our mind and their order is the...
Does one hour of bright or short- wavelength filtered tablet screenlight have a meaningful effect on adolescents' pre-bedtime alertness, sleep, and daytime functioning? Chronobiol Int 2014;31:496e505.Heath M, Sutherland C, Bartell K, Gradisar M, Lovato N, Micic G, et al. Does one hour ...
they are cheap. Although traditional incandescent lamps are low in price and good in color rendering, they consume a lot of power and have a short lifespan. Most of the power is used for heating. The new light source whose performance is far lower than that of the new generation...
Based on time-resolved fluorescence measurements it was proposed that Lhca4 can occur in different conformations: a “blue” (maximum at 680–690 nm) conformation with a relatively short excited state lifetime and a “red” (720 nm) one with a long lifetime [31]. The existence of ...
Recent scientific papers have drawn attention to potential blue light hazard associated with the use of LED lighting and the validity of exposure limit values of safety norms has been called into question. But can data coming from rat model experiments b
Screens tend to emit light which is rich in blue wavelength light, which has a particularly alerting effect on the body clock. However, the intensity of light from screens tends to be very low. Bright overhead lights could have a stronger alerting effect. A major disadvantage of getting ...