how light produce or propagates
Light is produced it does not produce. It is produced by the excitement of subatomic particles called photons and propagated by radiation
Only the disturbance produced in the medium in the form of simple harmonic vibration gets propagated in the form of waves. Hence a material medium is a must to do so. But in case of light it is the electro magnetic energy being propagated and so no material medium is required as an essential one.
In cultivated varieties they are propogated by budding or cuttings. Species and new varieties are produced from seed.
How is light propagated as a wave through empty space?
an electric field and a magnetic field both oscillating at the same frequency and orthogonal to each other.
Light is also a kind of energy. It is transformed not as mechanical wave. Because mechanical wave definitely needs a material medium to get propagated. Sound energy is transmitted only as a mechanical wave. Without air medium sound cannot be propagated. But light does not need such material medium. It can pass even through free space in the form of electromagnetic wave. The general concept is: When any disturbance is made any where at any time in the space that would be propagated to other places. This is what we call transmission of light disturbance.
they r propagated by leaf margins
In light dependent reactions ATP and NADPH are produced
laser light is produced by solar reacting pannels that are transfered into capsules that contain magna light that turn into a small red flash of light.
Light from a meteorite is caused by friction with the atmosphere
heat is produced
Yes. Cistus can be propagated by seeds or cuttings and is easy to propagate.