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| Posted by Rowsdower | 01/13/04 |
| Just a question, because I'm unsure of something: Does windchill affect inanimate objects? I think I've been told that the wind makes it FEEL that cold, but isn't it still just the regular temperature? For example: If it's 10 degrees here and 10 degrees 5 miles away, isn't the wind still just 10 degrees even if I'm driving through it? I'm really not sure... :o |
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| Posted by od-1 | 01/13/04 |
| That a good question i'm not really sure. I do know it does increase the rate at which things cool down but I'm not sure if the end temp is affected. I'll have to look in to it. In any case it seems it was cold enough to crack the windshields . |
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| Posted by cnmne | 01/14/04 |
| Wind chill does not affect inanimate objects. It can never be colder than the real air temperature. The wind produced by a moving car will cause heat to be disappated more quickly than when standing still. The wind chill temperature is not what will cause the windshield to crack. However, the speed at which the temperature drops from the hot liquid to the air temperature might very well cause a break. |
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| Posted by Bobbrt | 01/15/04 |
| Cnmne's right. The speed of the car doesn't make the temperature lower, it just makes it get to the same final temperature faster. Also, glass doesn't crack because it's too hot or too cold. It cracks because part of it is changing temperature faster than another part. This creates stress in the glass (because half of it is trying to expand or contract and the other half isn't), causing the crack. The key to this teaser is the SPEED at which the glass changes temperature, not the temperature itself. |
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| Posted by od-1 | 01/16/04 |
| WELL there you have it thanks guys for the technical explanation, :) |
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| Posted by Jon0513 | 01/18/04 |
| i like these not so great inventions! :lol: |
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| Posted by batti_s | 01/19/04 |
| nice puzzle od!!!
bobbrt is right about the differential heating that causes glass to crack. that is the reason why very hot liquids are not poured fast into glass tumblers. |
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| Posted by kcelf27 | 04/26/05 |
| Boy do I feel dumb. You guys are all to technical. It's amazing what you can learn while having fun!!! |
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| Posted by froggygg | 04/28/05 |
| Many, many years ago I just had to test out the do not put a hot piece of glass into (or pour into) cold water. Guess what?! I'll never use that measuring pitcher again!!! It works the same as your teaser and the cold windshield and hot cleaner. CRACK....Enjoyed this one even if it did remind me of my once favorite pitcher!
:lol: :lol: :lol: |
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| Posted by snaps | 06/27/05 |
| Seems like the tests that were done to see if it worked weren't all that great... |
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| Posted by smarty_blondy | 10/01/05 |
| As good as the first one. :D |
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| Posted by peppamintp | 11/07/05 |
| I knew the glass would crack but now I know why it cracks. Thanks for the info. Good teaser. :wink: |
