Blue

Blue is the colour between violet and green on the optical spectrum of visible light. Human eyes perceive blue when observing light with a wavelength between 450 and 495 nanometres. Blues with a higher frequency and thus a shorter wavelength gradually look more violet, while those with a lower frequency and a longer wavelength gradually appear more green. Pure blue, in the middle, has a wavelength of 470 nanometres. In painting and traditional colour theory, blue is one of the three primary colours of pigments, along with red and yellow, which can be mixed to form a wide gamut of colours. Red and blue mixed together form violet, blue and yellow together form green. Blue is also a primary colour in the RGB colour model, used to create all the colours on the screen of a television or computer monitor.

The modern English word blue comes from Middle English bleu or blewe, from the Old French bleu, a word of Germanic origin, related to the Old High German word blao. The clear sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering. When sunlight passes through the atmosphere, the blue wavelengths are scattered more widely by the oxygen and nitrogen molecules, and more blue comes to our eyes. Rayleigh scattering also explains blue eyes; there is no blue pigment in blue eyes. Distant objects appear more blue because of another optical effect called atmospheric perspective.

Blue (Down by Law album)

Blue is the second full-length album by the punk rock band Down by Law.

Track listing

Personnel

Blue (queue management algorithm)

Blue is an scheduling discipline for the network scheduler developed by graduate student Wu-chang Feng for Professor Kang G. Shin at the University of Michigan and others at the Thomas J. Watson Research Center of IBM in 1999.

Functioning

Like random early detection (RED), it operates by randomly dropping or marking packet with explicit congestion notification mark before the transmit buffer of the network interface controller overflows. Unlike RED, however, it requires little or no tuning to be performed by the network administrator. A Blue queue maintains a drop/mark probability p, and drops/marks packets with probability p as they enter the queue. Whenever the queue overflows, p is increased by a small constant p_d, and whenever the queue is empty, p is decreased by a constant p_i < p_d.

If the mix of traffic on the interface does not change, p will slowly converge to a value that keeps the queue within its bounds with full link utilization.

Stochastic fair Blue

Tube

Tube, or Tubes, may refer to:

Film, television, and Internet

Music

Construction and mechanics

Tube (BBC Micro)

In computing, the Tube was the expansion interface and architecture of the BBC Microcomputer System which allowed the BBC Micro to communicate with a second processor, or coprocessor.

Under the Tube architecture, the coprocessor would run the application software for the user, whilst the Micro (acting as a host) provided all I/O functions, such as screen display, keyboard and storage devices management. A coprocessor unit could be coldplugged into any BBC Micro with a disk interface (whose ROM contained the necessary host software) and used immediately.

Implementation

The 40-pin IDC "Tube" connector was a simple slave connection to the host processor's main bus, with 8 data lines, 7 address lines, and an interrupt input. The Tube protocols were implemented by hardware in the attached device.

Inside the coprocessor unit a proprietary chip (the Tube ULA, manufactured initially by Ferranti) interfaced and logically isolated the host and coprocessor buses. This allowed the Tube to work with a completely different bus architecture in the coprocessor unit. The only other active components needed were a microprocessor, some RAM, a small ROM containing processor specific client code, glue logic such as an address decoder and a power supply.

Tube (fluid conveyance)

A tube, or tubing, is a long hollow cylinder used for moving fluids (liquids or gases) or to protect electrical or optical cables and wires.

The terms "pipe" and "tube" are almost interchangeable, although minor distinctions exist — generally, a tube has tighter engineering requirements than a pipe. Both pipe and tube imply a level of rigidity and permanence, whereas a hose is usually portable and flexible. A tube and pipe may be specified by standard pipe size designations, e.g., nominal pipe size, or by nominal outside or inside diameter and/or wall thickness. The actual dimensions of pipe are usually not the nominal dimensions: A 1-inch pipe will not actually measure 1 inch in either outside or inside diameter, whereas many types of tubing are specified by actual inside diameter, outside diameter, or wall thickness.

Manufacture

There are three classes of manufactured tubing: seamless, as-welded or electric resistant welded (ERW), and drawn-over-mandrel (DOM).

Splash! (UK series 1)

Splash! is a British television show which teaches celebrities the art of diving with the aid of Tom Daley. The first series started on 5 January 2013 and ended on 2 February 2013. Gabby Logan and Vernon Kay hosted the show, with Andy Banks, Jo Brand and Leon Taylor as judges, and commentary by Alan March.

Contestants

The fifteen celebrities were revealed on 2 January 2013.Jennifer Metcalfe withdrew before the series began and was replaced by Donna Air.

Scoring chart

Average chart

This table only counts for dives scored on a traditional 30-points scale.

Live show details

Heat 1 (5 January)

Heat 2 (12 January)

Heat 3 (19 January)

Semi-final (26 January)

* Due to injury Ogogo had to withdraw from the competition

Final (2 February)

Ratings