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The problem was solved ages ago when someone did the design.Why would you still care now?
But I'm clearly talking about a laser that is a gas laser.I only need to show one example of a case where your idea is impossible to show that your idea is wrong.It doesn't matter if your idea works in other circumstances.
The kinetic energy of the electrons is dependent on temperature, not on whether or not it is an antenna.Do you accept that?
Most schoolkids understand the concept of temperature.
No point in teaching it to any machine (apart from a thermostat - and they seem to grasp it immediately time).
Electric current in the wire adds electrons kinetic energy.Do you accept that?
It introduces unnecessary complexity.
You need to learn a concept from the simplest cases.
Quote from: hamdani yusuf on 23/07/2022 15:37:37Name one.I already named one of the things you confidently got wrong.Quote from: Bored chemist on 23/07/2022 12:16:26Quote from: hamdani yusuf on Today at 04:54:12Thus a kind of energy not related to motion can not be called temperature.It quite often is.The electronically excited neon atoms in a HeNe laser which emit light have a negative electronic temperature. Nobody cares much about their movement.https://en.wikipedia.org/wiki/Negative_temperature#LasersDid you not understand it?
Name one.
Quote from: hamdani yusuf on Today at 04:54:12Thus a kind of energy not related to motion can not be called temperature.It quite often is.The electronically excited neon atoms in a HeNe laser which emit light have a negative electronic temperature. Nobody cares much about their movement.https://en.wikipedia.org/wiki/Negative_temperature#Lasers
Do you understand how little kinetic energy the current adds?Only about a part in a billion.
A monatomic gas like neon is much simpler than the heterojunction between two layers of semiconductor in a laser diode.
Have you ever taught a thermostat?What did you teach it?
Or misunderstand it, depends on what was taught to them.
How do you get that number?
Quote from: hamdani yusuf on 24/07/2022 09:00:21What's the proportion of transmitter power heating up the antenna compared to the power transmitting radio wave into space around it?Who cares?Why do they care?In an ideal world, no energy is dissipated as heat in the antenna, it's all transmitted.In practice the reflected power may be larger than that lost to heat via resistance.Quote from: hamdani yusuf on 24/07/2022 09:00:21I never measured them. Have you?I'm sensible enough to usually let other people do the actual measurements for me.On the other hand, I did once do one of them.Measuring the speed of sound in air is a high-school experiment.https://www.bbc.co.uk/bitesize/guides/z8d2mp3/revision/3#:~:text=Clap%2Decho%20method,to%20the%20wall%20and%20back).I'm pretty sure we got an answer near 330m/s.And I know how sound works, so I know that the speed of the molecules in air is about the speed of sound.And I understand the equipartition principle.So I know that the thermal KE of the electrons in a wire is the same as that of the air molecules (at the same temperature as the wire).And I know that an air molecule weighs about 60,000 times as much as an electron, so , since they have the same KE, the electrons must be travelling square root (60,000) times as fast.That's about 80 km/s.It's only an approximation, but it's good enough to make the point.It's also fairly easy to find the drift speed of an electron.https://en.wikipedia.org/wiki/Drift_velocity#Numerical_exampleTells you " the electrons are flowing at the rate of 23 μm/s".So, now that you know that the current through a wire only changes the speeds of the electrons by a tiny fraction- about a part in a billion- do you see why it doesn't really matter if the transmitter is turned on or off? More importantly, do you understand that if you actually knew science, you would already have known that?Do you realise you wouldn't have said Quote from: hamdani yusuf on 23/07/2022 04:54:12 Electrons on a radio transmission antenna or a power distribution transformer may have high kinetic energy, but we don't usually say that they have high temperature. because you would have known that the use of electrons in an antenna hardly changes their KE at all.Do you understand how, if you had spent time learning, you would ave avoided looking stupid?
What's the proportion of transmitter power heating up the antenna compared to the power transmitting radio wave into space around it?
I never measured them. Have you?
Electrons on a radio transmission antenna or a power distribution transformer may have high kinetic energy, but we don't usually say that they have high temperature.
If the gases are cooled down to near abolute zero, will they still have negative temperature?
Quote from: hamdani yusuf on 26/07/2022 01:04:06Have you ever taught a thermostat?What did you teach it?The point at which I wanted it to switch the heater on or off. We summarised all the stuff about kinetic energy by using a bimetallic strip that bends according to the mean k.e. of the atoms inside two different bits of metal.
Quote from: hamdani yusuf on 26/07/2022 01:00:55Or misunderstand it, depends on what was taught to them."Temperature is a measure of the average kinetic energy of the constituent atoms and molecules in a body". There being no other definition in my lifetime, that was always what was taught.
So I know that the thermal KE of the electrons in a wire is the same as that of the air molecules (at the same temperature as the wire).
So, now that you know that the current through a wire only changes the speeds of the electrons by a tiny fraction- about a part in a billion- do you see why it doesn't really matter if the transmitter is turned on or off?
Quote from: alancalverd on 26/07/2022 18:28:08Quote from: hamdani yusuf on 26/07/2022 01:04:06Have you ever taught a thermostat?What did you teach it?The point at which I wanted it to switch the heater on or off. We summarised all the stuff about kinetic energy by using a bimetallic strip that bends according to the mean k.e. of the atoms inside two different bits of metal.Your definition of teaching is unconventional.
What makes you think that ideal gas model can accurately describes behavior of electrons in a conductor?
Where does most of power fed by radio transmitter to the antenna go?
A resonating tuning fork has higher average kinetic energy than a silent tuning fork.
Any definition is unorthodox once you start applying it to teaching machines.And you did that.You can't complain about it now.