Diffraction angle

Physical terms

diffraction Angle is the direction of travel when the wave is diffracted Line and normal Angle between. Usually, only linear wavelengths such as light can exist, and they are multi angle. This phenomenon is related to the Volatility of Figure: Diffraction of each slit Diffraction angle The same place has the same stripe.

Diffraction angle is also called diffraction angle. The beam diffracts at the edge of the obstacle, and the angle between the diffracted part of the beam and the original propagation direction of the beam. The degree of beam divergence due to diffraction phenomenon can be determined by the diffraction angle.^[2]

Chinese name: Diffraction angle
Foreign name: angle of deviation

Alias: diffraction angle
Definition: Diffraction part and original propagation direction of light included angle

catalog

Phenomenon introduction

Announce

edit

also called diffraction Angle of deviation. light beam Occurs at the edge of an obstacle diffraction , between the diffracted light and the original propagation direction of the light included angle 。 The diffraction angle can be used to determine the cause Diffraction phenomenon The degree of divergence of the beam.^[1]

diffraction

English

Announce

edit

diffraction angle; angle of diffraction; diffracting angle; diffractive angle;^[1]

diffraction

Announce

edit

Spreading phenomenon

diffraction Finger wave Communication process Passing the edge of an obstacle or pore The spreading phenomenon that occurs when. The smaller the pore, the larger the wavelength, and the more significant this phenomenon is. for example Surface wave When encountering an obstacle, the wave bypasses its edge and reaches the object; The indoor speech sound can bypass the doors and windows to reach the outdoor. When light passes through the small hole, a bright spot appears on the screen behind the hole, and the brightness of its periphery gradually weakens outward. Careful observation can also see that there are some bright and dark stripes in this area.

use Huygens principle explain

If it is blocked by an object whose size is close to or less than the wavelength, bypass the object and continue. If it passes through a hole whose size is close to or less than the wavelength, it will form a ring wave to propagate forward with the hole as the center. Diffraction phenomenon It is the characteristic of wave, which can be used Huygens principle Explain.

application

Announce

edit

diffraction Angle refers to the change of light path when light is diffracted included angle 。 For example, in X-ray diffractometer In, we take 2theta as the diffraction angle, because 2theta is X-ray The angle that changes direction after diffraction. stay Medical Physics It is also mentioned that the diffraction angle is wavelet Ray and slit Planar normal The included angle of.

Novice on the road

Growth task Getting Started with Editing Edit Rule Edit by myself

I have questions

Content query Online Service Official post bar Feedback

Complaints and suggestions

Report bad information Failed to appeal through entries Complaint of infringement information Blocking query and unblocking

Jinggong Network Anbei No. 1100000200001