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**Key moments in video**

From 02:29 — Change of variable of integration to a dimensionless quantity

From 06:00 — Checking the limit of integration

## Related querie

### What does Plancks theory state?

Planck's quantum theory states that **an atom can only emit or absorb energy in discrete amounts**. Planck's constant relates a particle's energy and frequency.

### What is the significance of Plancks constant in quantum theory?

The significance of Planck's constant in this context is that **radiation, such as light, is emitted, transmitted, and absorbed in discrete energy packets, or quanta, determined by the frequency of the radiation and the value of Planck's constant**.

### What does Plancks equation represent?

Planck's equation describes **the amount of spectral radiance at a certain wavelength radiated by a black body in thermal equilibrium**. Planck's equation (colored curves) accurately describes black body radiation.

### What does the Stefan Boltzmann law tell us?

Stefan-Boltzmann law, statement that **the total radiant heat power emitted from a surface is proportional to the fourth power of its absolute temperature**.

### What does Plancks quantum theory confirmed?

The agreement between Planck's theory and the experimental observation provided strong evidence that **the energy of electron motion in matter is quantized**. In the next two sections, we will see that the energy carried by light also is quantized in units of hˉν. These packets of energy are called “photons.”

### What is the significance of Plancks quantum theory?

It **explains the quantum nature of the energy of electromagnetic waves**. Planck's quantum theory deals with phenomena such as the photoelectric effect and the nature of radiated emission which were not explained by the laws of classical mechanics.

### What are the main points of Planck quantum theory?

According to Planck's quantum theory, **Different atoms and molecules can emit or absorb energy in discrete quantities only**. The smallest amount of energy that can be emitted or absorbed in the form of electromagnetic radiation is known as quantum.

### What did Planck contribute to the atomic theory?

What were Max Planck's contributions? Max Planck was a German theoretical physicist who **discovered the quantum of action, now known as Planck's constant, h, in 1900**. This work laid the foundation for quantum theory, which won him the Nobel Prize for Physics in 1918.

### What is Plancks energy equation?

The energy of a photon can be calculated from Planck's equation **E = hc/λ**, with h = 6.625 × 10^{–}^{34} Js and c is the velocity of light, which results in values of 4.9 × 10^{–}^{19} J (400 nm) to 7.1 × 10^{–}^{19} J (280 nm) for the electromagnetic UV spectrum.

### Why Planck constant is denoted by H?

The stable version was approved on 20 December 2010. There are template/file changes awaiting review. The Planck constant (denoted h) is **a natural constant named after Max Planck, one of the founders of quantum theory**. Its value is approximately h = 6.63 × 10^{–}^{34} J s.