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D B Sweeney
Joined: 27 Aug 2010 Posts: 2842 Location: Edinburgh, Scotland
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Posted: Fri Dec 02, 2011 11:53 pm Post subject: |
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Ghostfan Tom wrote: |
In that case how would you detect a draught?
I think it's all a question of sensitivity snd calibration. As standard such cameras will be calibrated to show different levels of intensity for the temperature range over which they could be expected to be useful, I.E. light for a person or animal and darker for lower temperatures. In that state, a variation of a few degrees probably would be hard to resolve.
That does not mean that such equipment could not be re-calibrated to highlight variations in air temperature over a given range. |
There are several low tech ways to detect drafts, I used to use very fine duck down. Drafts are slightly different to temperature fluctuations though in that their predominant trait is that they're directional.
I'm no expert on TIC's but I'm sure they can't be fine tuned to show fluctuations in ambient air temperatures.
DB |
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flossy Moderator
Joined: 17 Oct 2006 Posts: 4921 Location: UK tyne/wear (geordie land)
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Posted: Sat Dec 03, 2011 6:31 am Post subject: |
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what happened to the old wet finger, works for me |
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thecactus
Joined: 07 Mar 2011 Posts: 3196 Location: Northern Ireland
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Posted: Sat Dec 03, 2011 3:27 pm Post subject: |
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flossy, |
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bitterbuck1 Moderator
Joined: 18 Nov 2006 Posts: 3963 Location: Arizona, USA
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Posted: Sat Dec 03, 2011 7:53 pm Post subject: |
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flossy wrote: | what happened to the old wet finger, works for me |
I'm laughing so hard I'm blowing snot.
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flossy Moderator
Joined: 17 Oct 2006 Posts: 4921 Location: UK tyne/wear (geordie land)
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Posted: Sun Dec 04, 2011 4:21 am Post subject: |
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eewwww bitter hehehe |
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