Black hole (disambiguation)

A black hole is an object with sufficient density that the force of gravity prevents anything from escaping from it except through quantum tunneling behavior.

Black hole may also refer to:

Computing
  • Black hole (networking), in computer networking, a place where traffic is silently discarded
  • Blackhole server, a DNS server that handles reverse lookups of invalid IP ranges
  • Blackhole, a storage engine provided by MySQL data

Film and television

Games

Music

Places
  • Black Hole of Calcutta, a dungeon in which many British troops and various civilians allegedly died in 1756
  • Black Hole of Hong Kong, a prison cell in which 47 Chinese men were detained for three weeks during the Esing Bakery incident of 1857
  • The Black Hole, a section of White Canyon, Utah

Other uses
gollark: Practice doing things under time pressure?
gollark: Differentiate it, substitute x=3 into that, set dy/dx to 0, solve.
gollark: Oh, actually just > 0 since it's a denominator, yes.
gollark: The $9-x^2$ bit has to have a value >= 0. So solve that and work out for which values it is >= 0.
gollark: You want the bit in the square root to be greater than or equal to 0, so just figure out what values of x give you that.

See also
  • bit bucket, in computer programming, a place of permanent oblivion for data
  • Blackhole exploit kit, used to install malware on victims' computers
  • DNSBL (DNS-based Black Hole List), a list used to block spamming IP addresses
  • Micro black hole, a black hole on a quantum level or with quantum effects
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