present participle of reflect on

After thinking about something

plural of reflecter

simple past tense and past participle of reflect upon

simple past tense and past participle of self-reflect

a microscope whose objective is composed of two mirrors, one convex and the other concave; it is free of chromatic aberration

To consider a weighty topic or idea.

A telescope which produces a magnified image by reflecting light through a series of mirrors housed in a tube, using a large curved mirror to gather the light and one or more additional mirrors to transmit the light to an eyepiece.

(astronomy) A nebula that consists of dust which reflects starlight and appears blue in photographs.

(optics) The angle between the perpendicular and a ray reflected from a surface