Polar

Polar may refer to:

Geography

Places

People

Mathematics

Malta Polar

Malta Polar may refer to:

Polar (cataclysmic variable star)

A Polar (also AM Herculis Star) is a highly magnetic type of cataclysmic variable binary star system. Like other cataclysmic variables (CVs), polars contain two stars: an accreting white dwarf (WD), and a low-mass donor star (usually a red dwarf) which is transferring mass to the WD as a result of the WD's gravitational pull. (In technical terms, the donor star overfills its Roche lobe.) Polars are distinguished from other CVs by the presence of a very strong magnetic field in the WD. Typical magnetic field strengths of polar systems are 10 million to 80 million gauss (1000–8000 teslas). The WD in the polar AN Ursae Majoris has the strongest known magnetic field among cataclysmic variables, with a field strength of 230 million gauss (23 kT). The presence of such a strong magnetic field gives rise to a number of fundamental differences between polars and non-magnetic CVs.

Overview of Accretion in Polars

The dress (viral phenomenon)

The dress, also known as Dressgate and associated with the hashtags #thedress, #whiteandgold, and #blackandblue, is a viral photo and meme which became popular on 26 February 2015. The viral phenomenon revealed differences in human colour perception which have been the subject of serious ongoing scientific investigation in neuroscience and vision science, with a number of papers published in peer-reviewed science journals.

The meme originated from a washed-out photograph of a dress posted on the social networking service Tumblr, and a dispute over whether the dress pictured was blue and black, or white and gold. In the first week after the surfacing of the image alone, more than 10 million tweets mentioned the dress. Although the actual colour of the dress was confirmed to be blue and black, the image prompted discussions surrounding the matter across various platforms, with users discussing their opinions on the colour and why they perceived the dress as being a certain colour, while some dismissed the issue as trivial.

Dress (Buck-Tick song)

"Dress" (ドレス) is the seventh single released by the Japanese rock band Buck Tick, released on May 21, 1993. It appeared 6 times in the Oricon Chart during 1993.

Track listing

Musicians

References

Military uniform

Military uniform is the standardised dress worn by members of the armed forces and paramilitaries of various nations. Military dress and military styles have gone through great changes over the centuries from colourful and elaborate to extremely utilitarian. Military uniforms in the form of standardised and distinctive dress, intended for identification and display, are typically a sign of organised military forces equipped by a central authority.

History

A distinction should be made between uniforms and ethnic dress. If a particular people or culture favoured a distinctive dress style this could easily create the impression of uniformly dressed warriors. The issue is further complicated by the fact that the distinctive features of particularly effective warrior classes were often copied - weapons, armour, fighting style and native dress. Thus the distinctive and colourful clothing of the Hungarian hussars became a model for hussar units all over Europe. The kilts and sporrans of Scottish highland clans were distilled into regimental dress when the British Army started to recruit from these tribal groups.