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Physics

Questions tagged [temperature]

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It's the physical property that indicates the degree/intensity of heat present in a substance or an object. It can be expressed and measured according to various scales.

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This thought experiment was made with the purpose of trying to understand whether the ideal gas law holds in relativistic frames.Suppose you have two observers, a box that is perfectly insulative and ...
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Here is what I observed:Background:I kept this bottle in my room, at a place where:half of it was in complete darkness (well, minimal light did fall on it, but very minimal).the other half ...
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Water's temperature is given by (average K.E. of molecules) $=3/2 \ k_{B}T$, so my intuition is that flowing water molecules will gain additional kinetic energy from flowing, leading to a huge ...
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We all know from every day experience that if you touch metal that's been left outside in direct sunlight, it'll burn you. Why is that?I've read that it's related to the specific heat capacity and/or ...
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Let's say there is a group of molecules confined in a box. Because of the molecules, the temperature in the box reaches up to 5000 kelvin. Each molecule in the box has about 1.036 * 10^-19 Joules (...
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I am struggling with the concept of temperature.Suppose you cook a pan of brownies in a 350-degree oven for 30 minutes. At the end, if you measured the temperature of the brownies, the air, and the ...
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Question:In thermodynamics, temperature is defined by$$\frac{1}{T} = \left( \frac{\partial S}{\partial E} \right)_{V, N}.$$This definition is mathematically consistent and reproduces the expected ...
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So, in thermodynamics, $C_p$ is the specific heat at constant pressure, and $C_v$ is the specific heat at constant volume. But what actually is $C_m$, specific heat? What does it signify? Is it either ...
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I was thinking about this, and originally I thought that heat was just the movement of things... but it's not. And I was thinking about heat in general, what is it, is it like... a movement of atoms (...
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I wish to know if ideal gasses can achieve negative temperatures and if it has been experimentally achieved in some form or not. The reason I am interested in this is because, for ideal gasses we have...
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It seems like it's meaningful to talk about percentage increases in measurements like length, duration and area: A statement like "This stick is 57% longer than that stick" is consistently ...
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We have a thermal camera and its purpose is to detect hot spots at different distances. We made an experiment with a JPEG picture and we noticed the following:At the same distance, one object at 600 ...
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This may be an incredibly basic question, yet i am unable to understand as why speed of sound is independent of pressure. as according to me as i understand when increasing the pressure , density ...
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I've read wiki but only some unaware claims and recording disappears after measurement. But quick searching showed this paper gives $$kT_H=\frac{\hbar c}{4\pi\sqrt{2 l_p R_H}}$$I don't know quantum ...
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Thermal equilibrium between thermodynamic systems is defined as a relation that is satisfied if there isn't any net heat exchange when the systems are put in contact. The zeroth law states thermal ...

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