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Author Topic: Do white coloured objects reflect infrared radiation?  (Read 20584 times)

Offline Chemistry4me

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Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #1 on: 29/01/2009 03:41:02 »
When using illumination it should be visible.
It's just like any other light.

I think??

You know, photons bouncing, having a good time..
Or am I missing something here?
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #2 on: 29/01/2009 03:45:32 »
I don't know, you're the physicist, you tell me, please :)
 

Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #3 on: 29/01/2009 04:05:22 »
Night intensifiers work differently though.
"They focuses the light (photons) on a 'photocathode'.
The cathode release electrons which are then are 'energized' by bouncing around in a electric field as well as generating even more electrons by specially coated walls.. This makes for a denser electron cloud representing an intensified version of the original image.

And they are passive.

Just like cooled infrared detectors.
Cooling the detectors to around -160 C gives them a very extreme sensitivity and without that cooling the detectors would be flooded by their own radiation.
It's only like ten percent of the light from the Sun that comes down as infra red radiation.
So there is not much around:)

But if you're thinking of 'thermal night vision' which also are in the infra red spectrum you are making excellent sense, as well as making me curious:)
That as all living tissue emit infrared energy (temperature).
Those can see through both smoke and fog.
And those are also 'passive' 


If you use such then white materials absorb the least 'heat' and therefore will be hardest to 'see'.
Or if you use material created to contain infra red (heat).
What do you need it for?

--------

Ah, Mr Chem.
Nope, I'm not.

But it was a nice idea.
Thanks
« Last Edit: 29/01/2009 04:09:58 by yor_on »
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #4 on: 29/01/2009 04:07:57 »
I don't need it for anything, I was just being curious. :)
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #5 on: 29/01/2009 04:10:25 »
But if you're thinking of 'thermal night vision' which also are in the infra red spectrum you are making excellent sense, as well as making me curious:)
What is this? You know a lot more about it than me, I'm curious as to what you are thinking too!
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #6 on: 29/01/2009 04:11:26 »
What? You're not a physicist? ?????????
 

Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #7 on: 29/01/2009 04:14:50 »
Looking at what I wrote, I think there is a 'curse' on me.
It's called 'modify' at this site:)

That's why I need to learn how to spell.
Each one his own warlock:)

And no, you know an awful lot of chemistry right:)
Do you work with it?
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #8 on: 29/01/2009 04:16:46 »
No, I do not work with chemistry, and I don't know an awful lot about it either!!
You're just a fan of physics right Mr. yor_on?
 

Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #9 on: 29/01/2009 04:19:32 »
Well we're both 'fans' I think.
You're a fan of primary Chemistry if I understand you right?

I'm more 'physical'.
No big difference there.

Together we will conquer:)
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #10 on: 29/01/2009 04:21:52 »
Primary chemistry? What do you mean by that?

Together we will conquer:)
Yes, indeed.
 

Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #11 on: 29/01/2009 04:25:35 »
Well your name gave me a clue I have to admit.
As well as this:)
http://www.thenakedscientists.com/forum/index.php?topic=11612.msg221718#msg221718
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #12 on: 29/01/2009 04:27:44 »
Okay, it is the only thing that I know!!
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #13 on: 29/01/2009 04:29:37 »
Shouldn't you get some rest Mr. yor_on?
 

Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #14 on: 29/01/2009 04:40:19 »
Aha, was it a quiz.

Nah, it's cool, thermally speaking:)
I'll sleep tomorrow:)

Tell me, do you have an inkling for the sweet and 'leisury' life of the armed forces?
It's just an impression I got from a former conversation.
I can't help but wonder.

-------
Btw: that flag?
Shouldn't it be Swedish?



 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #15 on: 29/01/2009 04:45:49 »
Sweet and 'leisury' life aye?? No, I am not planning to join the SAS any time soon!! :)
Yeah, sorry, I couldn't find a Swedish flag. [:I][:I]
 

Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #16 on: 29/01/2009 04:50:42 »
Doesn't matter:)

Otherwise i've heard that some of the best soldiers come from 'under there'
(Kiwis and Maoris:)

Australia have their own SAS units, right.
Is it the same in New Zealand?
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #17 on: 29/01/2009 04:57:14 »
I don't really know much about the army, New Zealand has a small army, because no-body is going to attack us (at least that is what the government thinks), hee hee, mwahaaa   hahaaha 
 

Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #18 on: 29/01/2009 04:59:56 »
Well, I've heard about some real dangerous Beavers on the loose.
Warn them...
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #19 on: 29/01/2009 05:01:35 »
Don't worry, I'll take care of this!
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #20 on: 29/01/2009 05:02:49 »
Look away Mr. yor_on! This is getting violent!
 

Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #21 on: 29/01/2009 05:04:08 »
Mr chem, are you sure you're not 'connected'?
This is starting to look dangerous.
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #22 on: 29/01/2009 05:06:14 »
WAIT A MINUTE! There are no beavers in New Zealand!!!
I think you might have meant possums Mr.yor_on.
« Last Edit: 29/01/2009 05:09:37 by Chemistry4me »
 

Offline yor_on

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Do white coloured objects reflect infrared radiation?
« Reply #23 on: 29/01/2009 05:11:50 »
Nope, gotta warn you, there are beavers loose everywhere!!!
And they are masters of deception.

One even succeeded to get into my laptop.
 

Offline Chemistry4me

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Do white coloured objects reflect infrared radiation?
« Reply #24 on: 29/01/2009 05:14:45 »
Oh no! I must boost the security on my computer!
 

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Do white coloured objects reflect infrared radiation?
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