Question

What is meant by quantam?​

Answer 1

Answer:

Quantum is the Latin word for amount and, in modern understanding, means the smallest possible discrete unit of any physical property, such as energy or matter.

• Quantum came into the latter usage in 1900, when the physicist Max Planck used it in a presentation to the German Physical Society.
• Planck had sought to discover the reason that radiation from a glowing body changes in color from red, to orange, and, finally, to blue as its temperature rises.
• He found that by making the assumption that radiation existed in discrete units in the same way that matter does, rather than just as a constant electromagnetic wave, as had been formerly assumed, and was therefore quantifiable, he could find the answer to his question.

Answer 2

A very small quantity of electromagnetic energy