3 ms·
Agreed that I know very little about this subject. But heat itself can be imagined as a kind of field. For eg: A candle, the closer you move to the flame, ever
by kamaal 2y ago
Agreed that I know very little about this subject.
But heat itself can be imagined as a kind of field. For eg: A candle, the closer you move to the flame, every point closer to flame, the temperature is higher. The farther you move apart the temperature reduces. Same with the Sun.
Take for eg- Sound. The closer you move to the source of it, the louder it sounds, the farther you move from it, the fainter it gets.
Now you could call this a wave. Like the wavelength stretches with distance, also decreasing frequency and amplitude. Another way of looking at this a field. Imagine 3D space with points, like a lattice. Each point has a value, and the values get denser to the center, and move farther apart as move away from center.
If Im not wrong a lot of physical phenomenon exhibit this behaviour. Including thing like light, sound, temperature, gravitation etc.
While you can make a beam of light, I doubt you can make a beam of magnetic field(ray?) or gravity for that matter?
- vlovich123 2y agoHeat is only a field in radiation because it’s literally being carried by electromagnetic waves. Heat is also conduction and convection - in those cases it’s decidedly not a field.
- itishappy 2y agoThe heat and wave equations have an important difference: heat: ∂u/∂t = k ∂²u/∂x² wave: ∂²u/∂t² = c² ∂²u/∂x² Note the extra time derivative on the wave equation. The heat equation is dissipative, moving towards the average value, spreading energy out over time. The wave equation, on the other hand, allows for solutions that oscillate and maintain their shape while they travel. This means that waves such as electromagnetic (light) or gravitational can in theory be focused and beamed significant distances without much loss. A plane wave solution is lossless, but requires an infinite emitter. Finally, note that this does not apply to static fields, such as magnetic, electric, or gravitational fields, which if not oscillating will still spread out and dissipate over distance.
- barrenko 2y agoSo the second equation does not cover my induction cooktop?