Umbra (disambiguation)
From Wikipedia, the free encyclopedia
The umbra is the darkest part of a shadow.
Umbra may also refer to:
- Umbra (typeface), an American typeface designed in 1935
- Umbra (World of Darkness), realms within the role-playing game World of Darkness that are beyond the reaches of physical reality, such as the spirit world, the afterlife, and the astral plane
- Umbra (comics), a member of the Legion of Super-Heroes
[edit] See also
- Umbral calculus, a field of mathematics understood primarily to mean the study of Sheffer sequences, including polynomial sequences of binomial type and Appell sequences
- Top Secret Umbra, a classification for the highest, most sensitive category of communications intelligence