2006-07-29 19:02:16 · 18 answers · asked by Jigjasa 1 in Science & Mathematics ➔ Biology
The sky is blue because it is reflecting light from the ocean. Grass is green because of chlorophyll which is green and absorbs sunlight to turn into energy for the grass to live. Blood is red when it contacts oxygen because of the iron in the blood oxidizing. And yes, to an extent, someone can become invisible - around a year ago there was an article in the magazine Popular Science about a scientist - I believe in Japan, or Korea? - who developed a suit that had the technology to sense and reflect light from around an individual to effectively make them invisible to the human eye.
Oh, and in case you didn't know, the reason we see colors is connected with the reflection and absorbtion of different spectra of light.
2006-07-29 19:11:06 · answer #1 · answered by motherof3 2 · 1⤊ 0⤋
The sky is blue because blue is the easiest colored wave length to expand across a vast space. Blood is only red when it hits oxygen originally in your body the blood is blue that's why your veins are blue. As for the Grass it's got something to do with photosynthesis i think I'm not sure about that one..the whole invisible thing i believe that if your unsure about your existence then maybe just maybe you can become invisible
2006-07-29 19:06:44 · answer #2 · answered by OnE 2 · 0⤊ 0⤋
Sky is blue because the light from the sun that reaches our atmosphere is absorbed and scattered by the air molecules. The wavelength of light that is most likely to be scattered is blue light.
Grass is green because of the prevalence of chlorophyll. Chlorophyll takes on a green color because it aborbs all light except green (which it reflects).
Blood is red because of the presence of hemoglobin. Hemoglobin is an iron containing protein. The iron gives red blood cells their red color, thus turning blood the same color.
It would be nearly impossible for someone to become invisible. Most of our body contains some sort of pigment - these pigments come from such a wide variety of sources (metals, proteins, fats, etc.) that erasing every single one of them (or masking them) would be an impossible feat.
2006-07-29 19:16:32 · answer #3 · answered by michelsa0276 4 · 0⤊ 0⤋
The color of the substance depends on the frequency of the light it reflects. Sky is blue because the atmosphere absorbs all the other color shades (for ex. rainbow colors) and the air molecules scatter or reflect the blue light ( I believe it is called the Raman effect).
Yes people can be invisible. Currently intense research is going on in some labs across the country according to a recent news article.
2006-07-29 19:10:01 · answer #4 · answered by stvenryn 4 · 0⤊ 0⤋
the sky is blue because green was taken by grass, grass is green because red was taken by blood, and blood is red because blue was taken by the sky. And no one can become invisible...know him?
2006-07-29 19:07:19 · answer #5 · answered by _ooopsie daisy_ 3 · 0⤊ 0⤋
Sky is blue, because I painted it that way last night.
Grass is green, so that martians can be camouflaged in it.
Blood is red, so that it matches pretty much anything you're wearing should you sprout a hole in your body and start leaking onto your clothes.
Has anyone ever said that you were a pain? Well, work on it and become a PANE, and you will be invisible.
Hope that helps. Knowledge is power..keep the questions coming. ;-)
2006-07-29 19:08:33 · answer #6 · answered by scruffycat 7 · 0⤊ 0⤋
the skys not blue its gray at times and our blood is blue not red and the grass is dying so its brown and yellow in spots and no we cant become invisible gosh!
2006-07-29 19:12:24 · answer #7 · answered by Gypsy 4 · 0⤊ 0⤋
the sky is blue of the light wavelenths... and since the blue waves strikes the atmosphere, the color of the sky is blue...
the grass is green because of the chlorophyll which is common in plants... this pigment is color green...
the blood is read because of the hemoglobin... hemoglobin carries oxygen to the blood and thus coloring it red... or giving it the crimson red color... blood which has no oxygen is seen as blue...
2006-07-29 19:12:26 · answer #8 · answered by angel r 2 · 0⤊ 0⤋
grass- chlorophyll. blood- hemoglobin. sky- what ever color of the spectrum it is not absorbing. any one invisible? sure, light is invisible until it reflects off something. don't believe me? shine a flashlight straight up in the night sky, you don't see the beam, now pass your hand in the path of the beam, presto! its reflecting off your hand and now its (the beam of light) visible. oh and read up on the string theory, that's where it gets weird, (concerning true invisibility).
2006-07-29 19:25:11 · answer #9 · answered by jayhawk 2 · 0⤊ 0⤋
Scientists in London are working on the secrets of invisibility and are coming closer every day.
2006-07-30 06:36:11 · answer #10 · answered by panthers2316 2 · 0⤊ 0⤋