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

Other categories


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

This is an alphabetical index of all content pages.


Also see

Importance Ratingsplugin-autotooltip__plain plugin-autotooltip_bigImportance ratings

In a departure from the usual Wiki format, Wikenigma assigns 'Importance Ratings' to some pages.

The idea is to separate articles which are considered (by the editors) to cover exceptionally important unknown issues from those which (although also u…

Newsplugin-autotooltip__plain plugin-autotooltip_bigNews

[ newest at the top ]

• Mar. 2021 : Many thanks to the The British Library, which has now begun permanently archiving the contents of Wikenigma.

• Jan. 2021 : A milestone of 600 unknown articles has been reached.

• Oct. 2020 : A milestone of 500 unknown article…

Contactsplugin-autotooltip__plain plugin-autotooltip_bigContacts

Use this form to send a message to Wikenigma . . . [ * note: all fields must be completed ]

Legalplugin-autotooltip__plain plugin-autotooltip_bigLegal

Content in general

Please note that in common with other publicly editable wikis, this website is not responsible for content posted by the public. Nevertheless, the ongoing editing process should be able to remove unsuitable content in a reasonable time. If you…

Donate/Sponsorplugin-autotooltip__plain plugin-autotooltip_bigDonate to Wikenigma . . .

The best way to donate is by adding new original content !

That can either be by contributing to an existing article, or by creating a new page with an as-yet-unlisted 'Known Unknown'.

Any registered user can create content.

Registerplugin-autotooltip__plain plugin-autotooltip_bigRegistration

At present, only registered users can create and edit articles.

If you'd like to register as a contributor, please request a password.

When filling in the form, make sure you supply a valid e-mail address, as the login password will be sent to that addre…


Wikenigma supports:


Utilities
rss / xml feed
sitemap file
A-Z listing (archived)plugin-autotooltip__plain plugin-autotooltip_bigA-Z listing (archived)

This is an older, partial A-Z listing intended for search engines only.

Last updated : March 2021

For an up-to-date list see A-Z listing in the Main Menu

Abracadabra etymology

Acamprosate

Acrocyanosis

Acupuncture

Attention-Deficit / Hypera…

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

Solar Cycle

Scientists started to make records of sunspot activity in the mid 18th century, and by the mid 19th it was discovered that the number of spots (which are lower-temperature entry-and-exit points for magnetic flux lines penetrating the Sun's surface) varies on a very regular cycle of approximately 11.1 years.

The reason for the oscillation is unknown.

We are currently in the 25th recorded cycle.

The magnetic poles of the sun flip with each cycle, so it may be more accurately described as a 22.2 year cycle.

The cycles are now being carefully studied - because the intensity of solar flares and magnetic events on the Sun, which are also linked to the cycle, have been found to strongly affect electronic equipment in Earth orbit. As well as influencing weather events and (to an unknown extent) biological systems etc.

Further reading : The calm before the storms Science, Vol. 364, Issue 6443, pp. 818-821, May 2019.


Also see Solar flaresplugin-autotooltip__plain plugin-autotooltip_bigSolar flares

The first solar flare to be formally documented was recorded by astronomer Richard Carrington, who observed a 'white light' flare in September 1859 - projecting the image produced by an optical telescope, without filters. See: Wikipedia

However, the mecha…

Importance Rating


    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 MARCH 2021