When you look at the sky you see some tiny dots moving ,and you actually thought or i thought at my child hood that I got some strange power of seeing microorganism with naked eye but actually there is a reason behind this ,The phenomenon was so well-known that it acquired the nickname "blue-sky sprites,",so lets discuss about this
So when we look at the sky, rays from the sun passes iris, then on the way of reaching photo receptor in retina ,there were being blocked by tiny blood vessels having red blood and white blood.
The red blood cells blocks or absorbs blue light from sun . But since our eye adjusts we don't see dark nets across our vision. Because the eye adjusts, the 1% of the time that a white blood cell moves along the blood vessel, it lets the light through. The retina sends a signal of increased brightness to the brain, an, to the viewer, it looks like there is a tiny spot of blue-white light moving through the sky.
So how come scientist identified this:
At First researchers noted the frequency and motion of the blue-sky sprites, then they went looking for other thin tissue to shine light through. They used the wing of a hibernating bat, and the cremaster (the thin muscle covering the testes) of a rat.
By shining light through these tissues, they could note, with instruments, the movement of bright spots through the blood vessels. By examining the frequency, motion, and size of the bright spots, the researchers were able to confirm white blood cells as their cause.
So when we look at the sky, rays from the sun passes iris, then on the way of reaching photo receptor in retina ,there were being blocked by tiny blood vessels having red blood and white blood.
The red blood cells blocks or absorbs blue light from sun . But since our eye adjusts we don't see dark nets across our vision. Because the eye adjusts, the 1% of the time that a white blood cell moves along the blood vessel, it lets the light through. The retina sends a signal of increased brightness to the brain, an, to the viewer, it looks like there is a tiny spot of blue-white light moving through the sky.
So how come scientist identified this:
At First researchers noted the frequency and motion of the blue-sky sprites, then they went looking for other thin tissue to shine light through. They used the wing of a hibernating bat, and the cremaster (the thin muscle covering the testes) of a rat.
By shining light through these tissues, they could note, with instruments, the movement of bright spots through the blood vessels. By examining the frequency, motion, and size of the bright spots, the researchers were able to confirm white blood cells as their cause.
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