Questions tagged [heat]
The heat tag has no usage guidance.
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Is there any evidence that mammalian ears can act as thermal receptors?
Some snakes have a "pit organ" capable of sensing infrared radiation. The structure is similar to a primitive pit eye. Snakes are cold-blooded and their prey is generally warm-blooded, so it ...
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Heat-treatment for protein expression
I want to express thermophilic protein in E. coli and the first step purification is to heat the crude protein. Since I don't know the optimum temperature to denature the contaminants, I plan to heat ...
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Can dogs see infrared radiation, i.e., heat?
I, like most of my fellows, prefer my meals served piping hot. As all know, humans sometimes feed their dogs table scraps. If I put down a small piece of chicken from within a piping hot chicken pot ...
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What makes humans feel cold?
I have seen various sources talking about the effects of oestrogen on temperature: all of them agree that it makes you cold but they seem to explain the reason differently. One states that oestrogen ...
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Is there a functional reason why the right side of the heart has a tricuspid valve while the left has a bicuspid one?
Is there a functional reason why the right side of the heart has a tricuspid valve while the left has a bicuspid one? Why is it necessary that the right atrioventricular valve be 3-cusped?
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Will proper autoclave treatment really "inactivate all resistant bacterial spores"? If not, how widespread are autoclave-resistant bacterial spores?
Wikipedia's says:
A widely used method for heat sterilization is the autoclave, sometimes called a converter or steam sterilizer. Autoclaves use steam heated to 121–134 °C (250–273 °F) under ...
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Is it known how some heat-resistance Bacillus spores repair their DNA after having been heated to 420 °C? (but not much higher)
Background
Discussions below several recent posts in Space SE (links below) indicate that bacterial spores are a serious problem when considering how to prevent a future spacecraft mission to ...
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Which animals can see (or feel) the Moon’s infrared radiation?
The luminosity (bolometric) of the Moon in infrared is several times greater that its luminosity in visible light. Moreover, it may be rather possible for the Moon to be obscured by some fog or haze ...
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Are there any thermogenic plants which are suitable as houseplants?
I have been wanting to supplement my heating system with some plants that produce heat! I have become aware that there are around 14 species which generate significant amounts of heat for example the ...
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How is boiling oil tolerated by some people?
There are people who can withstand exposure to extreme heat with no apparent side effects. One such person is Kann Trichan, a Thai street vendor who dips his bare hands in hot oil. An old TV show ...
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How does a sheep's fleece impact its tolerance for high temperatures?
I am interested in whether a sheep endures more stress when its environment is hot if it has a full fleece or if it is recently shorn. Put another way, at the extremes, is a sheep more likely to die ...
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Carotene in Dracaena draco
I'll keep this question straight and simple:
Some succulent plants produce carotene, a red pigment, in response to great heat, turning their leaves red. The dragon blood tree (Dracaena draco) is ...
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Are blue feathers better insulators?
I recently found an article talking about the colors of bird feathers. https://www.smithsonianmag.com/science-nature/why-are-some-feathers-blue-100492890/
Apparently, unlike other colors, where ...
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advantages of shivering in cold environments
When we feel cold, our the muscle tries to generate heat by shivering and the brown adipose tissue tries to generate heat by non-shivering methods. The muscle generates heat but also spends energy on ...
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How didn't large, highly active dinosaurs overheat?
The cube-square law seems to be the deciding factor when it comes to biological heat management. Small organisms with large surface areas relative to their volumes, like mice, need fast heartbeats and ...
