normal.
law of reflection to test the alignment of the cylindrical lens
The reference line is the normal (perpendicular) to the surface.
A name of a measuring item used in science is MEASURING CUP
Beaker - measuring volume of the solution Measuring cylinder - measuring volume
Exactly what measuring device? There are hundreds of "measuring devices" to measure different things.
normal
normal
normal
It's called the normal.
law of reflection to test the alignment of the cylindrical lens
The reference line is the normal (perpendicular) to the surface.
The reference line is the normal (perpendicular) to the surface.
When talking about reflection (normally with light), one works out the angle of incidence and the angle of reflection by drawing a line that is perpendicular (90 degrees) to the reflector and measuring the angle between this line and the ray of incidence/reflection. This line is called the normal line. It is easier to measure the angles of incidence and reflection on a flat surface, because it is easier to draw an accurate normal line.
Totalstation
Clarity of a diamond is an ANSII standardized procedure that involves placing a light near the diamond and measuring the refraction.
it describes that how much a wave refracted through a medium or by a medium..... through it we can decide that how much and at what point we will get it's intensity..
prevent trapping of air bubbles line of sight must be perpendicular to get the correct reading and avoid errors