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 ...

Can we use convective boundary conditions for a lid driven cavity in a steady incompressible air flow with heat transfer in a lid driven cavity?Is this type of problem exist for air type of fluid? If ...

I am trying to determine field produced by heat source on the intrinsic surface of infinitely high cylinder. Because we are only looking at the surface, I can "unroll" it into complex plane. ...

Suppose I have a microliter-sized droplet of water. In principle, I could insert a tiny probe, but even a micro-thermometer would draw or add heat and disturb the system significantly. How is ...

With a conventional convection oven, one can make baked potatoes by wrapping them in aluminum foil and letting them bake at 180 °C (356 °F) for like 40 minutes. The heat seems to get to the potatoes ...

Could someone explain how to explicitly expand this expression based on the folloing figures.In terms of band energies, chemical potential, group velocities, relaxation times, and the derivative of ...

As I learned about heat pump cycles, specifically transcritical CO2 cycles, there has been something very basic that i could never wrap my head around.Neglecting pressure loss due to friction, we ...

Super-cooled water: There are many videos on youtube showing bottles of super-cooled water freezing instantly when tapped, like this one or forming little stalagmites of ice when poured out. There ...

Many invisible gases (such as propane) can only be seen with infrared cameras. They do not cast a shadow to the naked eye.My question is whether they are likely to cast a shadow to an infrared camera....

I read in my book that if the thermal conductivity is very high the body (black body) won't absorb any heat. Why is that?Higher thermal conductivity just means it conducts heat better right, then how ...

The following is an example from Cengel's and Ghajar's book "Mass and Heat Transfer", from my heat transfer class in Mechanical Engineering.Example 1-2.A heated continuous, stainless, ...

The standard way in many-particle physics to define/derive the thermal current for a many-particle Hamiltonian seems to be, to evaluate the continuity equation\begin{equation}\frac{d}{d t} H_i(t)+\...

When two objects at different temperatures—say, a hot cup of black coffee and a tumbler of ice—are placed in contact, we’re taught that “heat flows from hot to cold.” But I’m wondering: on the ...

We all know that in the atmosphere, when air is sprayed into the vortex tube inlet, the vortex tube produces cold and hot air. My idea is, if we were underwater and spray water into the inlet of the ...

Consider this scenario mentioned in the question:I am having trouble understanding two major things in this question(i) How can we assume that the pressure of the gas is constant throughout the ...