Please register and log-in to create and edit pages

User Tools

    Please register and log-in to create and edit pages

Site Tools


Main Menu

Main menu
Click categories to expand


A-Z listingplugin-autotooltip__plain plugin-autotooltip_bigA-Z listing

This is an alphabetical index of all content pages.


Other categories

Utilities

Contacts
Register

Also see

Importance Ratings
News
Legal
Donate/Sponsor


Wikenigma supports:


Feeds etc
rss / xml feed
sitemap file
A-Z listing (archived)

Wikenigma - an Encyclopaedia of Unknowns Wikenigma - an Encyclopaedia of the Unknown Science

Micro Black Holes

The possible existence of Micro Black Holes (and Mini Black Holes) was first suggested by Stephen Hawking in his 1971 paper 'Gravitationally collapsed objects of very low mass' in the Monthly Notices of the Royal Astronomical Society, Vol. 152, p. 75.

Hawking suggested that such holes were entirely compatible with Einstein's relativity theories, and that the smallest ones would have very little influence on ordinary matter - likely to pass through an object with the mass of Earth without interaction.

Current physics concepts suggest that the lower limit for the mass of a Black Hole is about 22 micrograms. According to Stephen Hawking's theories, however, such an entity would be inherently unstable, and would 'evaporate' almost immediately after its creation. Larger versions might be able to eventually accrue matter, but over a very long timescale (typically 10s of millions of years) The strength of their gravitational attraction following the same rules as any other object, i.e. directly proportional to its mass - which might be extremely low.

They have never been detected in any experiment to date.

In summary, it's currently not known if Micro Black Holes (or their remnants from 'evaporation') are common in the universe - or if they exist in Nature at all (for any appreciable length of time).

See: Wikipedia

Note: Micro Black Holes gained attention recently with speculations that the Large Hadron Collider at CERN may now be sufficiently powerful to create them as a side effect of some collisions. (see : Ultra Relativistic Particle Collisions ) However, as mentioned above, Hawking theory proposes that they would instantaneously self-destruct.

It has also been pointed out that cosmic raysplugin-autotooltip__plain plugin-autotooltip_bigCosmic rays

"“Cosmic rays are typically protons or atomic nuclei of elements such as helium, carbon, or iron. The most energetic have energies more than 10 million times greater than those in the world’s most powerful atom smasher, the Large Hadron Collider.
, which permanently bombard almost all regions of the universe at all times, can also have the energies necessary to create Micro Black Holes. Further details : The case for mini black holes in the CERN Courier, Nov. 2004.


    Share this page :

X

Dear reader : Do you have any suggestions for the site's content?

Ideas for new topics, and suggested additions / corrections for old ones, are always welcome.

If you have skills or interests in a particular field, and have suggestions for Wikenigma, get in touch !


Or, if you'd like to become a regular contributor . . . request a login password. Registered users can edit the entire content of the site, and also create new pages.

( The 'Notes for contributors' section in the main menu has further information and guidelines etc.)

Show another (random) page

DOKUWIKI IMPLEMENTATION DESIGN BY UNIV.ORG.UK JULY 2021