Physics question...

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T_Laurich

Senior Member
Mar 24, 2013
3,356
122
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#1
Okay so I was taking a shower about 30 minutes ago and I thought came into my head... How do we feel heat and not pressure...

By this I mean on a molecular scale all heat is: are atoms moving faster then a motionless state... So when these atoms move they are going around randomly.... Now on a molecular scale they would be like 1000 little BB's hitting you randomly... Your nerves pick it up as heat not pressure... But when a thousand BB's (atoms) hit you at once we pick it up as pressure...

So Here is my question, on a molecular scale how do our nerves separate the sensations of heat and pressure... When relatively you can not tell the difference? Are our nerves so fine tuned they actually track 100 atoms and see what the mean direction of the atoms are, and then they justify their sporadicness as heat... Or do we know innately, or is it just an memorization thing that we can get wrong...

I understand both heat and pressure are energy, so don't go into that :p I want to know how we calculate the difference between the two...
 

starfield

Senior Member
Jun 13, 2009
3,393
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#2
There are several types of sensory receptors in the peripheral nervous system; mechanoreceptors respond to pressure while thermoreceptors are activated upon temperature stimulation.

Not really sure if that answers the question...:eek: