There are 17 conditions associated with discharge or mucus in eyes, drainage or pus and yellow eyes. The links below will provide you with more detailed information on these medical conditions from the WebMD Symptom Checker and help provide a better understanding of causes and treatment of these related conditions.
Burning glass. A burning glass or burning lens is a large convex lens that can concentrate the sun's rays onto a small area, heating up the area and thus resulting in ignition of the exposed surface. Burning mirrors achieve a similar effect by using reflecting surfaces to focus the light.
It has to do with reflection and how glass magnifies heat. When the sun streams toward the window, the room or person near the window gets hot. Yet, if you touch the glass, thâ¦e glass itself may feel cool or cold because the colder outside temperature affects the surface of the glass.