A flashlight beam is like a acute
When the beam of a flashlight hits a mirror, it is reflected.
A beam of light.
Ray
Filter is fixed on the head of flashlight to change light color. If you use red filter, the beam will be in red light.
scattered light
A cone.
probably a cylinder
a cone that does not have a tip
yes, a straight line
When the beam of a flashlight hits a mirror, it is reflected.
A beam of light.
A beam of light.
Circumscribing.
circumscribed
If the flashlight is turned on and direct beam to eyes, it is harm to eyes.
Ray
A beam of light.