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This a Meat thermometer , has metal skewer , there are no instructions. and look on Makers site , No trace of this product?Answer:The metal skewer is to make a hole in meat etc to enable the thermometer to be inserted more easily. You don't put the thermometer IN the microwave - you simply use it to check the temperature of the foods you have cooked in there.
Another important factor in thermal radiation is emissivity. Is radiation by an object with extremely low emissivity considered thermal?
I should say that objects with higher temperature are some times treated like they have higher potential energy compared to the same/similar objects but at lower temperature.
Take a continuous spectrum, but has flat distribution (up to certain frequency), instead of black body radiation. Is it considered thermal?
Quote from: hamdani yusuf on 18/04/2022 09:44:05Take a continuous spectrum, but has flat distribution (up to certain frequency), instead of black body radiation. Is it considered thermal?If it is due to heat, yes.
A thermal spectrum is a continuum.
Quote from: hamdani yusuf on 18/04/2022 09:39:07 I should say that objects with higher temperature are some times treated like they have higher potential energy compared to the same/similar objects but at lower temperature.Same object, yes. Similar object, no. The thermal energy (i.e. heat content) of a body of mass M, specific heat capacity S and temperature T is MST.
All thermal spectra are continuous, but not all continuous spectra are thermal.
Quote from: alancalverd on 19/04/2022 19:55:15Quote from: hamdani yusuf on 18/04/2022 09:39:07 I should say that objects with higher temperature are some times treated like they have higher potential energy compared to the same/similar objects but at lower temperature.Same object, yes. Similar object, no. The thermal energy (i.e. heat content) of a body of mass M, specific heat capacity S and temperature T is MST.Except that S varies with T.
But at any particular value of T (except at critical temperatures between phase changes) the heat content is MST. IN a phase change it is T(ΣMxSx).
Quote from: alancalverd on 19/04/2022 19:57:16Quote from: hamdani yusuf on 18/04/2022 09:44:05Take a continuous spectrum, but has flat distribution (up to certain frequency), instead of black body radiation. Is it considered thermal?If it is due to heat, yes.Sunlight is filtered to produce a narrow spectrum radiation. Is it considered thermal?
Quote from: hamdani yusuf on 19/04/2022 05:09:29Another important factor in thermal radiation is emissivity. Is radiation by an object with extremely low emissivity considered thermal? It still depends.
Quote from: Bored chemist on 19/04/2022 20:43:13All thermal spectra are continuous, but not all continuous spectra are thermal.Sunlight is filtered by a band stop filter which absorbs a narrow spectrum radiation at 500 nm wavelength. Is it still considered a thermal spectrum even though it's no longer continuous?
It still depends.
Is it supposed to be an answer?
Let's agree that it depends on something.
What does it depend on?
I already told you twice.
No
Quote from: Bored chemist on 20/04/2022 20:11:10NoI think you mean yes. Everyone knows that S varies with T, but at any particular value of T, S will have a value.
Quote from: Bored chemist on 21/04/2022 08:48:09I already told you twice.Which one?
Yes there is.That is why I provided it.Did you somehow miss this bit?Quote from: Bored chemist on 13/04/2022 23:07:45A xenon arc lamp gives a fairly good approximation to thermal spectrum- unless you look near the emission lines at the right hand endhttps://en.wikipedia.org/wiki/Xenon_arc_lamp#/media/File:Xenon_arc_lamp_profile.pngThe visible radiation from the sun is close enough to a thermal spectrum to let us estimate the temperature of the sun's surface.But the emission lines were what allowed someone to demonstrate the existence of helium
Quote from: alancalverd on 21/04/2022 11:44:50Quote from: Bored chemist on 20/04/2022 20:11:10NoI think you mean yes. Everyone knows that S varies with T, but at any particular value of T, S will have a value. Yes, and the clever ones know that you need to integrate the energy added over the temperature rise.Your view is like saying that the top of a hill is flat and the bottom of the hill is flat so you can calculate the potential energy of an object at the top of the hill by multiplying the weight by zero.