What is blue?

Answer 1

the color of the air when it's time to come home
I used to tell my son to come home for dinner when it gets blue out, he knew what it meant
it's the color of everything sometime after the sun is no longer high in the sky but before it gets dark

Answer 2

Blue is one of the few colors that we actually see as others have noted it is a certain wavelength.

The eye has three cones for color sight. One detects blue light, one green light, and the other detects red light. Thus RGB color monitors and televisions.

The cone responsible for detecting blue is called a short-wavelength cone, S cone, or blue cone. It responds most actively to a wavelength of 420 nm which is actually more like what we call blue-violet.

Interesting the cones work in opponent processes. Blue/ yellow, Red/Green, Green/Red. In order to see the color Blue the R/G and G/R cones must be balanced in and the B/Y cone must be activated by short wave-length lights. If the R/G and G/R cones are balancef and there isn't shortwave light then the brain perceives Yellow. Which is interesting because the cones don't detect yellow wavelength light the detect its absence. The color yellow can be created by mixing Red and Green light.

Answer 3

Blue...

The hue of that portion of the visible spectrum lying between green and indigo, evoked in the human observer by radiant energy with wavelengths of approximately 420 to 490 nanometers; any of a group of colors that may vary in lightness and saturation, whose hue is that of a clear daytime sky; one of the additive or light primaries; one of the psychological primary hues.

A pigment or dye imparting this hue.
Bluing.

An object having this hue.
Dress or clothing of this hue: The ushers wore blue.

A person who wears a blue uniform.
blues A dress blue uniform, especially that of the U.S. Army.
often Blue
A member of the Union Army in the Civil War.
The Union Army.
A bluefish.
A small blue butterfly of the family Lycaenidae.

The sky.
The sea.

Answer 4

Blue is a term that is generally agreed upon as a description in the English language of an electromagnetic wave, as perceived by a fully functioning human eye.

It is also a term for a statement of mind, similar to being sad.

It is also a boy band... and a bunch of other things.

Answer 5

The color blue is something our minds make because the rest of the world tells us it's blue. If you call it something differant your wrong. In the world the color blue will always be called blue.

Answer 6

1. The hue of that portion of the visible spectrum lying between green and indigo, evoked in the human observer by radiant energy with wavelengths of approximately 420 to 490 nanometers; any of a group of colors that may vary in lightness and saturation, whose hue is that of a clear daytime sky; one of the additive or light primaries; one of the psychological primary hues.
2. a) A pigment or dye imparting this hue.
b) Bluing.
c) An object having this hue.
d) Dress or clothing of this hue: The ushers wore blue. person who wear a blue uniform.

Answer 7

Blue is also a sadness someone feels, either over something recent, a death or a break-up, or something long term, more like depression. In older days they use to call it melancholy.

Answer 8

i have 2 yens that are blue and 4 shirts that are blue and the bathroom is blue as well

Answer 9

1st definition: colour
eg: my daughter owns a blue teddy bear

2nd definition: a feeling or emotions
eg: being so distraught, he sure is in his blue mood

3rd: err.. i think its close to erotic
eg: last night, i caught my bro watching a blue mvie.

Answer 10

blue is #0000FF, any HTML color value you can find in this page that has this value, it's blue. Want to prove? Do it... Learn HTML coding. You'll know...