## What wavelength is de Broglie for an electron having a kinetic energie of 1.0 eV and a de Broglie wavelength?

For an electron with KE=1 and rest mass Energy 0. 511 MeV, the associated DeBroglie wavelength is 1. 23 nm, about a thousand times smaller than a 1 eV photon.

### What is the energy of a photon that has the same wavelength as a 12 eV electron?

What is the energy of a photon that has the same wavelength as a 12-eV electron? (Ans. 3.5 keV)

#### What is the wavelength of electron?

wavelength for electron

Accelerating voltage E[kV] | Relativistically corrected accelerating voltage E*[kV] | Wavelength of electron l[pm] |
---|---|---|

100 | 109. 78 | 3. 7014 |

120 | 134. 09 | 3. 3492 |

160 | 185. 05 | 2. 8510 |

200 | 239. 14 | 2. 5079 |

**Is wave a particle? **

Now that we know the dual nature light as “both an electron and a wave” is established, quantum mechanics has evolved its fundamental theory from electromagnetics to quantum mechanics. Einstein believed that light was a particle (photon), and that the flow of photons is an oscillation.

**Is matter a wave or particle? **

Matter can be described as a wave… or a particle. In the 1920s, a young physicist named Louis de Broglie made a radical suggestion: Since light has energy, momentum and a wavelength, and matter has energy and momentum, maybe matter has a wavelength, too. It’s a simple idea, but it’s hard to grasp.

## What did double-slit experiment prove?

In quantum mechanics, the double-slit experiment proved the inseparability between the wave and particle natures light and other quantum particles. Classic particles can be fired straight through a slit and will strike the screen in the same pattern as the slit.

### What did Thomas Young’s double-slit experiment show?

In May of 1801, while pondering some of Newton’s experiments, Young came up with the basic idea for the now-famous double-slit experiment to demonstrate the interference of light waves. This demonstration would prove that light is a wave and not a particle.

#### What is the principle of diffraction?

Diffraction can be experienced by all wave types. The Huygens-Fresnel Principle and the principle of superposition of wave are the two main explanations for difffraction. The first states that every point of a wavefront is a source for wavelets. These wavelets are spread in the direction of the source wave at the same speed.