A protractor is commonly used to measure the incident angle of a light beam. Alternatively, an optical goniometer can provide accurate measurements of the incident angle with high precision.
The angle of incidence is the angle between the incident ray and the normal (perpendicular) to the reflecting surface.
The angle between the incident ray and the normal is called the angle of incidence.
The incident angle to the Mirror will be 10 deG.
The relationship between the incident angle and the reflected angle in light reflection is described by the law of reflection. This law states that the angle at which light hits a surface (incident angle) is equal to the angle at which it bounces off that surface (reflected angle).
A reference line is a line that is perpendicular to the surface at the point of incidence. It is used as a point of reference for measuring the angles of incidence and reflection relative to the surface. The angle of incidence is measured between the incident ray and the reference line, while the angle of reflection is measured between the reflected ray and the reference line.
a protractor
A protractor
Your question is unclear but one instrument for measuring angles is a protractor.
Not sure what an instermant is, but an appropriate instrument is a protractor.
there is special instrument named "angle distribution measuring system" for the divergence angle measurement of LEDs. my email: bkk2003@163.com
universal bevel protactor is an angle measuring instrument which measures acute angle ,obtuse angle as well as it is used to layout an angle. its least count is 5 minute.
There's the protractor, a bevel gauge, and the plain ol' measuring tape with pen and paper.Inclinometer.
A protractor is commonly used for drawing and measuring angles. It is a tool with a semicircular shape that is marked with degree measurements. By aligning the center of the protractor with the vertex of the angle, you can accurately measure and draw angles.
The angle of incidence is the angle between the incident ray and the normal (perpendicular) to the reflecting surface.
We measure them on the either side of the mirror and not on the side of the normal to the surface of the mirror because, if the mirror or any reflecting surface is bent, then there will be a difference between the angle of incidence and angle reflection which can be avoided by measuring those angles on the either side of the mirror.
An angle measuring more than 90 degrees is obtuse. An angle measuring less than 90 degrees is acute. An angle measuring 90 degrees is right.
The angle between the incident ray and the normal is called the angle of incidence.