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A second reason why retinal evolved to be vital for human vision is because it undergoes a large conformational change when exposed to light. [38] This conformational change is believed to make it easier for the photoreceptor protein to distinguish between its silent and activated state thus better controlling visual phototransduction. [38]
Health threats from cosmic rays are the dangers posed by cosmic rays to astronauts on interplanetary missions or any missions that venture through the Van-Allen Belts or outside the Earth's magnetosphere. [ 1][ 2] They are one of the greatest barriers standing in the way of plans for interplanetary travel by crewed spacecraft, [ 3][ 4][ 5] but ...
Exposing skin to the ultraviolet radiation in sunlight has both positive and negative health effects. On the positive side, exposure allows for the synthesis of vitamin D 3. Vitamin D has been suggested as having a wide range of positive health effects, which include strengthening bones [1] and possibly inhibiting the growth of some cancers.
Keeping your eye on the ball and hitting it back over the net is an ideal example of your hands and eyes working together. This improves depth perception, movement, and balance.
Image credits: onesmilematters #2. Letting your children do a beauty regime. 9 year olds do not need to exfoliate, use night cream and day serum, and beg their mommie to spend $50 on special face ...
It’s a fact of life: Some friendships come and go. But while each can have some level of influence on who you become as a person, new research finds that the genetic makeup of your teenage ...
The field strength of electromagnetic radiation is measured in volts per meter (V/m). [ 2]: 139. The most common health hazard of radiation is sunburn, which causes between approximately 100,000 and 1 million new skin cancers annually in the United States. [ 3][ 4] In 2011, the World Health Organization (WHO) and the International Agency for ...
Last year, when COVID vaccines were still free, barely one in five Americans rolled up their sleeves for the latest dose. Now that some people will have to pay $100-plus for the shot, health ...