There is only one temperature where the Celsius and Fahrenheit thermometers will read the same and no conversions need to be made. What is it? A. -25 degrees
B. -40 degrees
C. 25 degrees
D. 0 degrees

waves moving from a fast medium to a slow medium will experience a reflection as light travels more slowly than red light. total internal reflection occurs when the critical angle is.

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.