Google+  
 

Does colourless mean invisible?

Subscribe to this topic Low Bandwidth Favourite Forums
Search this topic:

Displaying Page 1 of 1. | Go To Page:
Down to Quick Reply

Post ID: 3094197 Posted at: 15-Feb-2012 04:15:01
Pravinj
^Oh look! my username...
Member
Joined: 17 Aug 2010
Posts: 3,319
Post Likes: 60
+
I don't know how many of you'll have thought about this, but is a colourless substance invisible? and if it's not, then isn't the word "colourless" invalid, because it means the absence of colour, because though water is colourless, you can still technically see it, so if there is an absence of colour, should you be able to see? I personally don't think so, and I think the word colouless is invalid in some occasions, what do you guys think?


What lies behind us and what lies before us are tiny matters compared to what lies within us.- Ralph Waldo Emerson

Email: pjchecksmail@gmail.com
~Avy and Sig by me~
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3094219 Posted at: 15-Feb-2012 12:50:56
Vicar
Orbis terrarum est mei
Member
Joined: 3 Dec 2011
Posts: 1,086
Post Likes: 0
+
Colorless means black. Black is the lack of all color. White is the presence of all colors.

Water is generally thought of as blue, because it captures the weaker blue light waves. The same is true with the sky.

Or something like that. I just woke up - I can't remember the science of colors all too well right now.
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3094259 Posted at: 15-Feb-2012 18:12:15
CRAZY CHEATS
Das Milkinator
Member
Joined: 29 Mar 2007
Posts: 3,749
Post Likes: 0
+
Hmm, I'd say that black is itself a colour. It's an absence of light, but I wouldn't have said that it's a lack of colour.

The key to this question is definitions.
Colourless obviously means without colour. It doesn't have it's own shade.

Invisible means you can't see it.

The obvious example is a window.
It's colourless, it doesn't have it's own colour, you can see the colours of everything un-spoiled. However, you can still see a window. It's not invisible.
It's colourless, but not invisible.
Now known as
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3094365 Posted at: 16-Feb-2012 03:12:32
Pravinj
^Oh look! my username...
Member
Joined: 17 Aug 2010
Posts: 3,319
Post Likes: 60
+
I agree when you (above) say that black is in itself a colour, it just lacks any light. Maybe there should be a word for colourless things which are visible, I don't know, it's just a thought


What lies behind us and what lies before us are tiny matters compared to what lies within us.- Ralph Waldo Emerson

Email: pjchecksmail@gmail.com
~Avy and Sig by me~
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3094404 Posted at: 16-Feb-2012 07:42:59
CRAZY CHEATS
Das Milkinator
Member
Joined: 29 Mar 2007
Posts: 3,749
Post Likes: 0
+
There is a word, "see through"
Well, indirectly. If it's colourless then you have to be able to see through it, so it's still applicable
Now known as
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3094407 Posted at: 16-Feb-2012 08:06:23
Pravinj
^Oh look! my username...
Member
Joined: 17 Aug 2010
Posts: 3,319
Post Likes: 60
+
Oh....XD

Thanks dude, you cleared that up for me


What lies behind us and what lies before us are tiny matters compared to what lies within us.- Ralph Waldo Emerson

Email: pjchecksmail@gmail.com
~Avy and Sig by me~
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3095728 Posted at: 21-Feb-2012 10:24:12
the dawn of the gamers
Member
Joined: 22 Nov 2010
Posts: 395
Post Likes: 0
+
Vicar said:Colorless means black. Black is the lack of all color. White is the presence of all colors.

Water is generally thought of as blue, because it captures the weaker blue light waves. The same is true with the sky.

Or something like that. I just woke up - I can't remember the science of colors all too well right now.


You sir, are someone I like.

Black is not a color, and neither is white. People don't understand that and thus ask questions like the one in this thread.

So, technically, if something is colorless, then it is black. If there were no light, there would be no colors, if there were no colors, then everything would be black.
There are many powerful people in this world. Few of them are responsible.
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3095751 Posted at: 21-Feb-2012 13:07:38
dx_hbk
Skeptic
Member
Joined: 12 Aug 2006
Posts: 8,972
Post Likes: 4
+
The topic reminded me of this video.




Depends on how you define colours. Visible light that we can see using our eyes, is a very small part of the electromagnetic spectrum (bewteen 400nm - 700nm if i remember correctly)

The same is true with the sky.

That is thanks to Rayleigh scattering. Colours which have short wavelength I.E Blue, Violet,etc are traped in the atmosphear and scattered.

^ That guy is GOD


"Lost somewhere between immensity and eternity is our tiny planetary home." ~ Carl Sagan

0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3095808 Posted at: 21-Feb-2012 17:38:05
CRAZY CHEATS
Das Milkinator
Member
Joined: 29 Mar 2007
Posts: 3,749
Post Likes: 0
+
the dawn of the gamers said:
Vicar said:Colorless means black. Black is the lack of all color. White is the presence of all colors.

Water is generally thought of as blue, because it captures the weaker blue light waves. The same is true with the sky.

Or something like that. I just woke up - I can't remember the science of colors all too well right now.


You sir, are someone I like.

Black is not a color, and neither is white. People don't understand that and thus ask questions like the one in this thread.

So, technically, if something is colorless, then it is black. If there were no light, there would be no colors, if there were no colors, then everything would be black.


Tell me, how is it not a colour?
Now known as
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3095893 Posted at: 22-Feb-2012 08:30:29
the dawn of the gamers
Member
Joined: 22 Nov 2010
Posts: 395
Post Likes: 0
+
CRAZY CHEATS said:Tell me, how is it not a colour?



Light is what allows your eye to perceive colors. If there is an absence of light, then there is an absence of color. We call that "black". In other words, there is no wavelength that corresponds to the color "black".

However, if you're in an area that is so full of light that you can't see anything, that is called the presence of all colors, or "white".
There are many powerful people in this world. Few of them are responsible.
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3095901 Posted at: 22-Feb-2012 09:52:12
Pravinj
^Oh look! my username...
Member
Joined: 17 Aug 2010
Posts: 3,319
Post Likes: 60
+
the dawn of the gamers said:
CRAZY CHEATS said:Tell me, how is it not a colour?



Light is what allows your eye to perceive colors. If there is an absence of light, then there is an absence of color. We call that "black". In other words, there is no wavelength that corresponds to the color "black".


I disagree dawn, black in its self is a colour,

This is the definition of "black"

Adjective:
Of the very darkest color ; the opposite of white; colored like coal, due to the absence of or complete absorption of light.

Noun:
Black color or pigment.


What lies behind us and what lies before us are tiny matters compared to what lies within us.- Ralph Waldo Emerson

Email: pjchecksmail@gmail.com
~Avy and Sig by me~
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3095914 Posted at: 22-Feb-2012 11:51:50
the dawn of the gamers
Member
Joined: 22 Nov 2010
Posts: 395
Post Likes: 0
+
I used [.line.] as it seems the quote function is screwing up in this thread.

I said:


Light is what allows your eye to perceive colors. If there is an absence of light, then there is an absence of color. We call that "black". In other words, there is no wavelength that corresponds to the color "black".



Ravinj said:


I disagree dawn, black in its self is a colour,

This is the definition of "black"

Adjective:
Of the very darkest color ; the opposite of white; colored like coal, due to the absence of or complete absorption of light.

Noun:
Black color or pigment.



Mine was an argument of physics.

In the common dictionary there are 14 main entries for the world "Black". One of the definitions is: total darkness; total absence of light. Which holds true to my previous argument.

We could sit here and argue that we can (in a sense) "see" black as a color, but that will never change the fact that since it is the absence of light, it also the absence of color.

I answered your question with fact rather than a philosophical opinion, though I could do both if you like.
There are many powerful people in this world. Few of them are responsible.
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3096495 Posted at: 25-Feb-2012 14:30:31
cheatos_42
Member
Joined: 19 Sep 2006
Posts: 585
Post Likes: 0
+
I think black is not a colour, but it is only used as a colour at times as there is would be rather awkward for it not to be, and has only become a clour by human nature, even though it is an absence of such.

An example would be;
"What colour would you like your room painted?"
"I would like it painted Black"
"But black is not a colour"

or

"What colour would you like your room painted?"
"I don't want it to have a colour"
"Are you high?"

Basically what I'm saying as black is not a colour, but it is a description of the absence of such, or the description of complete darkness.

Things such as water or glass may not have colour, but we can see them due to the way in which they reflect light and distort the spectrum, and thus, are transparent, but by no means invisible.
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3096626 Posted at: 25-Feb-2012 21:51:16
tbug2007
Da Bug
Member
Joined: 1 Aug 2007
Posts: 10,421
Post Likes: 1
+
I'm fairly sure that pure water in a void would be colourless.

When we "see" pure water, we're not really seeing the water, but refractions of things in front of the water, behind the water, etc.

Or at least, it's a dumb theory.

ubr cuulness by Craizin the raizin. <3

FILIP R POLICE
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3096632 Posted at: 25-Feb-2012 22:25:30
Pravinj
^Oh look! my username...
Member
Joined: 17 Aug 2010
Posts: 3,319
Post Likes: 60
+
Thanks guys, for all your opinions, appreciate it


What lies behind us and what lies before us are tiny matters compared to what lies within us.- Ralph Waldo Emerson

Email: pjchecksmail@gmail.com
~Avy and Sig by me~
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3096731 Posted at: 26-Feb-2012 10:01:12
the dawn of the gamers
Member
Joined: 22 Nov 2010
Posts: 395
Post Likes: 0
+
tbug2007 said:



I'm fairly sure that pure water in a void would be colourless.

When we "see" pure water, we're not really seeing the water, but refractions of things in front of the water, behind the water, etc.

Or at least, it's a dumb theory.



No. We see the light reflecting off of the water. Light reflects off of everything in specific ways, that's how we can see things.

In a void there would be no light (that's why space is black), so we would not be able to see water, or technically anything else. Unless you're talking about the void of space, because there is some light travelling across the interstellar gaps due to what we call "stars".
There are many powerful people in this world. Few of them are responsible.
0
+
Reply Add Quote and ReplyMulti Quote
Post ID: 3145831 Posted at: 01-Sep-2012 20:41:34
Tendow
Member
Joined: 27 Jan 2011
Posts: 5
Post Likes: 0
+
In order to answer this question, you need to have a good understanding of how the eye and brain communicate and perceive color, a simple understanding of light, and good definitions of "colorless" and "invisible".

So first, I'll try to define invisible and colorless, and what the difference is. In normal, everyday talking, "colorless" means something that is left uncolored, however this is not what we are using it for, and in this context it means a state of absolutely no color. "Invisible" on the other hand, means something is incapable of being seen, or basically hidden.

Now, here is where we have to understand how the human eye works. I recommend the wikipedia page on trichomacy, which basically says that human eyes have 3 separate detectors for color. This means that there are 3 values that the brain has to work with (imagine that there are 3 wires, and each one controls a different color, for example one would tell you how much green there is, another how much blue, and another how much red).

If this seems a bit complex, it's because it is. But what this is telling us is that the eye can only really differentiate between 3 separate colors, and the brain mixes the signal to create a full color image. A black picture has no green, no red, and no blue in it, so this means none of the 3 types of cones are stimulated. A white image has 100% green red and blue in it, so all 3 channels are fully stimulated.

Not all light is "visible", meaning that the human eye is not simulated in any way by it. This means that for trichomats at least, a black signal is the same as an infrared signal.

So, does colorless mean invisible? Colorless and invisibility are two separate things in my mind, as something that is colorless doesn't stimulate our eyes, but it blocks out whatever is behind it, whereas something invisible would have to bend light around it in order for us not to see it.
0
+
Reply Add Quote and ReplyMulti Quote
Displaying Page 1 of 1. | Go To Page:

Subscribe to this topic Low Bandwidth Favourite Forums
Search this topic:

Currently viewing this thread:
REPLY IN THIS THREAD
Smilies, click to use

By posting on the SuperCheats forums, you agree to adhere to our forum rules.


BB Codes Guide

Please agree to the following Forum Rules to post here

1) Be respectful of others and don't abuse in any way other site users.
2) Please don't post personally identifiable information.
3) No linking to or advertising hacks, cracks, gambling or adult material.
4) Post with a purpose, i.e don't spam or just post a ton of smilies!
5) Remember minors also use this board, so be careful with your language.

I Agree


LINKS FROM THE WEB..