A single photon (although with radio waves we typically don't talk about photons) does not carry a lot of energy but it is sufficient to move electrons in an antenna.
A single photon (although with radio waves we typically don't talk about photons) does not carry a lot of inergy but it is sufficient to move electrons in an antenna.
Michel van Biezen Could it be that the absorption and emission of light is quantized (photons) and that the EM field is waves between the emission and absorption? We could think of light as waves over a period of time relative to the atoms of the periodic table and particles (photons) as an emergent uncertain future unfolds.
Light and E&M radiation is most certainly quantized. (Einstein received his Nobel prize for proving that). However how the photons together act like a continuous wave is not as well understood. One topic I would like to study more after I retire from my day job.
I think to total energy of individual photos is equal. Photons of long wavelengths have lesser energy per unit length compared to photos of shorter wavelength. In photos of longer wavelength wave properties are more prominent while in shorter wavelength photons particles properties are more prominent. It is like motion of 200 kg vs motion of 1 gram with 1 meter gap.
Hi Mr. Michel and thanks a lot for the lecture, what about the amplitude for each wavelength, does it change with frequency and the wavelength, also what is the amplitude of light, thanks a lot.
The "amplitude" of a light wave is not like the amplitude of a wave on a string. When we consider the intensity (energy per photon or energy per unit volume) it is related to the energy per photon (based on frequency) and the number of photons.
Michel van Biezen Hi again Mr. Michel, and thanks again, the amplitude of one photon travel from the Sun to the earth, is it same what you mentioned E/r, the amplitude changing with r. also the intensity changing with r. Also that you mentioned that there is energy for one photon, is it fixed value too.
Michel, @ 1mm is where microwaves and inferred overlap, When looking at the periodic table in the old Bohr model it states how many protons, neutrons and electrons it takes to create mass. To form hydrogen it takes 1 proton and 1 electron . The new cloud model states that 1 proton in a cloud of electron is hydrogen. So how big is the electron cloud holding Earth together? What is electricity? Thanks to MIT 8.02x - Lect 1 - Electric Charges and Forces - Coulomb's Law - Polarization, Lectures by Walter Lewin. They will make you ♥ Physics. ua-cam.com/video/x1-SibwIPM4/v-deo.html
You may want to watch this: Chemistry - Atoms, Molecules, and Ions (1 of 23) What is an Atom? ua-cam.com/video/Z2HWWjEaQ48/v-deo.html and the videos after that in that playlist.
Wow, 1.24x10^-11 eV or 12.4 picoelectron volts (peV) is over 142 billion (1.42x10^-11) times less energetic than even the least energetic visible light (red) photon at 700 nm which is at roughly 1.77 eV of energy. That energy is almost unfathomably small compared to visible light! I can see why not many people don't use energy units like joules of electron volts for radio waves lol
When are radiowave photon can have so few energy, how can it than be able to move electrons in an antenna to transmit the signal?
A single photon (although with radio waves we typically don't talk about photons) does not carry a lot of energy but it is sufficient to move electrons in an antenna.
@@MichelvanBiezen thanks
When a radiowave photon can have so few energy as exponent to the minus 11 eV, how can it than move electrons in an antenna to transmit a signal??
A single photon (although with radio waves we typically don't talk about photons) does not carry a lot of inergy but it is sufficient to move electrons in an antenna.
Michel van Biezen Could it be that the absorption and emission of light is quantized (photons) and that the EM field is waves between the emission and absorption? We could think of light as waves over a period of time relative to the atoms of the periodic table and particles (photons) as an emergent uncertain future unfolds.
Light and E&M radiation is most certainly quantized. (Einstein received his Nobel prize for proving that). However how the photons together act like a continuous wave is not as well understood. One topic I would like to study more after I retire from my day job.
I think to total energy of individual photos is equal. Photons of long wavelengths have lesser energy per unit length compared to photos of shorter wavelength. In photos of longer wavelength wave properties are more prominent while in shorter wavelength photons particles properties are more prominent. It is like motion of 200 kg vs motion of 1 gram with 1 meter gap.
The energy of each photon is proportional to its frequency.
@@MichelvanBiezenThank you for correcting my misunderstanding.
Hi Mr. Michel and thanks a lot for the lecture,
what about the amplitude for each wavelength, does it change with frequency and the wavelength, also what is the amplitude of light, thanks a lot.
The "amplitude" of a light wave is not like the amplitude of a wave on a string. When we consider the intensity (energy per photon or energy per unit volume) it is related to the energy per photon (based on frequency) and the number of photons.
Michel van Biezen Hi again Mr. Michel, and thanks again, the amplitude of one photon travel from the Sun to the earth, is it same what you mentioned E/r, the amplitude changing with r. also the intensity changing with r. Also that you mentioned that there is energy for one photon, is it fixed value too.
9:25 How come, there, you say "point five divided by ten" instead of multiplied by ten?
Different calculators work in different ways. I usually explain how I put the information into the calculator. The result is correct.
Michel, @ 1mm is where microwaves and inferred overlap, When looking at the periodic table in the old Bohr model it states how many protons, neutrons and electrons it takes to create mass. To form hydrogen it takes 1 proton and 1 electron . The new cloud model states that 1 proton in a cloud of electron is hydrogen. So how big is the electron cloud holding Earth together? What is electricity? Thanks to MIT 8.02x - Lect 1 - Electric Charges and Forces - Coulomb's Law - Polarization, Lectures by Walter Lewin. They will make you ♥ Physics.
ua-cam.com/video/x1-SibwIPM4/v-deo.html
You may want to watch this: Chemistry - Atoms, Molecules, and Ions (1 of 23) What is an Atom? ua-cam.com/video/Z2HWWjEaQ48/v-deo.html and the videos after that in that playlist.
Wow, 1.24x10^-11 eV or 12.4 picoelectron volts (peV) is over 142 billion (1.42x10^-11) times less energetic than even the least energetic visible light (red) photon at 700 nm which is at roughly 1.77 eV of energy. That energy is almost unfathomably small compared to visible light!
I can see why not many people don't use energy units like joules of electron volts for radio waves lol
AMAZING! Thank you so much, great examples as well.
You're very welcome!
Thank you you are amazing
Happy to help