Assertion: asterism | /r/HasProperty | seen with overhead point-source light
Facets:
value: such as from a flashlight
type: OTHER
Source sentences:
text: Asterism is not only seen with overhead point-source light such as from a flashlight or the sun itself, the phenomenon can also be seen in transmitted light, that is, by shining a light through the mineral from behind as seen with mica in the image below (often referred to as diasterism).