“The answer to my first question is that in the Easy Bake oven, the medium is air (just as it is in the Earth’s atmosphere). Air is transparent to visible light, but absorbs IR. That’s why an LED bulb doesn’t work, but the incandescent does.”
The air DOES NOT absorb IR. Oxygen and Nitrogen interact with the violet an blue photons (Rankin Scattering), notice the sky is blue?
The GHGs and water vapor in the air absorb IR. But honestly are you saying that there is an usually large amount of GHGs and water vapor int he oven?
The incandescent bulb sends out radiation, it is absorbed by the glass bulb, the aluminium pan and food.
The Florescent and LED bulbs send out radiation that is absorbed by the glass bulb, the aluminium pan, and food.
The IR sends out photons with energies between 0.001eV to 1.7 eVs. The other two send out photons with energies above 1.7eVs.
You may click on any of the types of radiation for more detail about its particular type of interaction with matter…hyperphysics.phy-astr.gsu.edu
“The quantum energy of infrared photons is in the range 0.001 to 1.7 eV which is in the range of energies separating the quantum states of molecular vibrations. Infrared is absorbed more strongly than microwaves, but less strongly than visible light. The result of infrared absorption is heating of the tissue since it increases molecular vibrational activity.”
“The primary mechanism for the absorption of visible light photons is the elevation of electrons to higher energy levels. There are many available states, so visible light is absorbed strongly.”
The bulbs send out MORE visible light than the incandescent bulb does but it won’t cook. Visible light creates very little heat as they cannot change the “molecular vibrational activity” of the mass that absorbs the photons.
“The medium is water and microwave photons “excite” this vibrational state.”
See the above cite:
“The quantum energy of microwave photons is in the range 0.00001 to 0.001 eV which is in the range of energies separating the quantum states of molecular rotation and torsion. The interaction of microwaves with matter other than metallic conductors will be to rotate molecules and produce heat as result of that molecular motion. Conductors will strongly absorb microwaves and any lower frequencies because they will cause electric currents which will heat the material. Most matter, including the human body, is largely transparent to microwaves. High intensity microwaves, as in a microwave oven where they pass back and forth through the food millions of times, will heat the material by producing molecular rotations and torsions.”
Microwaves don’t alter the vibrational state, the alter the rotational and torsion states. A different mechanism.
“The answer to my second question is that the water molecule absorbs microwave photons, the water molecules vibrate, run into each other, and create heat. The medium is water and microwave photons “excite” this vibrational state. Water absorbs those microwaves and converts them to heat. Here is a very cool video of this happening:
I think I’ve explained the third question above when I explained how a microwave worked.”
What is the point of the questions?
How do microwave photons involve visible light?
Seems like you are trying to change the direction of the conversation.
Stick to visible light James. That is what you claim is warming the planet.
But as I pointed out, visible light won’t cook a mini cookie in an EasyBake oven, so how can it significantly warm the planet?
The planet absorbs the Sun’s rays just like the inside walls, pan, bulb, and food in the EasyBake.
The fact that white surface reflect more radiation than black surfaces doesn’t help you either.
Visible light when it is absorbed by a surface doesn’t make significant heat, ergo they won’t work in the EasyBake Oven cause they don’t warm up the food or pan. which when they get hot, warms the air inside the oven.