14 votes

Can people feel the low heat radiation from very cold surfaces?

Yes they will feel the coldness, but it's the lack of heat radiation, not radiating coldness. Essentially, the scientist's body is radiating more heat than it is receiving, and it is this difference ...
BaddDadd's user avatar
  • 310
3 votes

Can people feel the low heat radiation from very cold surfaces?

While I have not done the numbers for your very particular follow up question (nevermind that it's impossible to reach 0K), I have every reason to believe the person will survive. Consider the night ...
Cort Ammon's user avatar
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3 votes
Accepted

How does a bubble pop?

According to your video, when the object first touches the bubble, it creates a hole on one side. However, the elasticity of the bubble's surface causes it to contract and partially seal around the ...
Testina's user avatar
  • 171
2 votes
Accepted

Can people feel the low heat radiation from very cold surfaces?

Regarding feeling the coldness: Sure, humans feel when their skin emits more IR radiation that is received. You can test this easily by opening a freezer and standing some ways away from it (avoiding ...
jpa's user avatar
  • 2,303
2 votes

Is there a force related to temperature?

The nature of the force (that tends to increase molecular speeds upon heating) depends on the specific heating mechanism. If one object heats another, the force is applied through interactions with ...
Chemomechanics's user avatar
2 votes

Is there a force related to temperature?

You appear to be confusing the kinetic energy of an object as a whole, a change in which requires net work (and thus a net force) and is not related to temperature, with the random kinetic energy of ...
Bob D's user avatar
  • 70.4k
1 vote

Can I modify the heat transfer equation by including the volumetric heat capacity in the partial time derivative?

The question and at least one answer presuppose that the relevant energy $U$ per unit volume $V$, which we can term $u$, is the product of the density $\rho$, specific heat capacity $c$, and ...
Chemomechanics's user avatar
1 vote

Why does internal energy depend only on a set of two state variables?

The internal energy of a system can be changed by heating it, doing work on it, and adding matter to it. These correspond to a shift in entropy $S$, volume $V$ (if only pressure–volume work is ...
Chemomechanics's user avatar
1 vote
Accepted

Applicabilty of the definition of thermodynamic temperature

I think you are mixing Thermodynamics and Statistical Mechanics concepts. From the point of view of Thermodynamics, there is a set of definitions and relations between functions of the state that hold ...
GiorgioP-DoomsdayClockIsAt-90's user avatar
1 vote
Accepted

Thermal radiation in hollow sphere

I think the easiest way to look at this is to imagine a vacuum in the cavity. Heat radiated from one side of the inner surface, is almost immediately reabsorbed on the opposite side of the cavity, so ...
KDP's user avatar
  • 1,878
1 vote
Accepted

How do particle acquire thermal distribution?

To get equilibrium, whatever the initial condition is, the bunch of the particles must forget the initial configuration and velocities. This implies that the dynamics of the system and the observation ...
GiorgioP-DoomsdayClockIsAt-90's user avatar

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