DC is ( over the theory ZF ) equivalent to the statement that every ( nonempty ) pruned tree has a branch.

" Speaking at a media conference in Washington, DC hosted by the Poynter Institute, Curtis stated, " The ' wisdom of the crowds ' is the most ridiculous statement I've heard in my life.

Before noon, the Associated Press issued a statement that the dispatch had not come from them, and at 12. 30 p. m. the State Department in Washington DC sent a telegram to verify that the proclamation was " an absolute forgery ".

The official statement issued by the band says that Calvert died in his sleep and that his body was discovered before the band was to do a sound check prior to a show at the 9: 30 Club in Washington, DC.

He later clarified his statement by explaining that it would feature a new character called The Fixer rather than Batman, and not be published by DC.

Local chapters were able to mobilize first, including a public statement by NJA's Washington DC chapter two days after the June 6th Israeli invasion of Lebanon, a statement and protest vigil by the Massachusetts chapter, and a City Hall protest by Philadelphia NJA.

One example is the axiom of dependent choice ( DC ).

For example, ZF + DC + BP is consistent, if ZF is.

It is also consistent with ZF + DC that every set of reals is Lebesgue measurable ; however, this consistency result, due to Robert M. Solovay, cannot be proved in ZFC itself, but requires a mild large cardinal assumption ( the existence of an inaccessible cardinal ).

ZF + DC + AD is consistent provided that a sufficiently strong large cardinal axiom is consistent ( the existence of infinitely many Woodin cardinals ).

* 1939 – DC Comics publishes its second major superhero in Detective Comics # 27 ; he is Batman, one of the most popular comic book superheroes of all time.

Abra Kadabra is the name of a DC Comics villain, who originally uses futuristic technology to create effects that appear magic to present-day people, and later gains actual magic powers.

A device that converts signals from one type to another ( for example, a light signal in photons to a DC signal in amperes ) is a transducer, a transformer, or a sensor.

Drain efficiency is the ratio of output RF power to input DC power when primary input DC power has been fed to the drain of an FET.

Based on this definition, the drain efficiency cannot exceed 25 % for a class A amplifier that is supplied drain bias current through resistors ( because RF signal has its zero level at about 50 % of the input DC ).

In this case the RF zero level is near the DC rail and will swing both above and below the rail during operation.

While the voltage level is above the DC rail current is supplied by the inductor.

There is a total of, ( double track ( as of 1998 )), of which are electrified, mainly at 3, 000 volts DC but with at 25 kV 50 Hz AC ( 2004 ) and all on standard gauge of.

Electrification is at 3 kV DC, with the exception of the new high-speed lines, and of two recently electrified lines in the south of the country which are at 25 kV AC.

** Luxembourg — no voltage change at the border ( the line Arlon-Luxembourg is at 3 kV DC and the line Gouvy-Luxembourg is at 25 kV AC )

Dr. Benjamin D. Santer ( born June 3, 1955 in Washington, DC, United States ) is a climate researcher at Lawrence Livermore National Laboratory and former researcher at the University of East Anglia's Climatic Research Unit.

When a metal wire is connected across the two terminals of a DC voltage source such as a battery, the source places an electric field across the conductor.

Direct current ( DC ) is the unidirectional flow of electric charge.

In direct current ( DC, also dc ), the flow of electric charge is only in one direction.

The abbreviations AC and DC are often used to mean simply alternating and direct, as when they modify current or voltage.

Rectifiers are constructed from diodes, where they are used to convert alternating current ( AC ) electricity into direct current ( DC ).

Similarly, diodes are also used in Cockcroft – Walton voltage multipliers to convert AC into higher DC voltages.

Despite the official names " National Comics " and " National Periodical Publications ", the line used the logo " Superman-DC " throughout ( the DC logo could be seen on their covers and ads as early as 1940 ), and the company became known colloquially as DC Comics for years before the official adoption of that name in 1977.

Despite logo changes since 2005, the old " DC bullet " continues to be used only on the DC Archive Editions series.

In addition to comics, it was designed for DC properties in other media, which was used for movies since Batman Begins, Superman Returns, and the TV series Smallville, Justice League Unlimited and The Batman, as well as for collectibles and other merchandise.

Class-D amplifiers have been widely used to control motors, and are used almost exclusively for small DC motors, but they are now also used as audio amplifiers, with some extra circuitry to allow analogue to be converted to a much higher frequency pulse width modulated signal.

The length DC being shorter, it is used to " measure " BA, but only once because remainder EA is less than CD.

A commonly applied approximation used in selection of a pickup is that less wire ( lower DC resistance )

This application is used in brushless DC motors.

Using inputs such as input voltage, output voltage, output current, frequency, ambient temperature, and inductance these calculators can predict the losses of the inductors core and AC / DC based on the operating condition of the circuit being used.

One of the techniques used by the FBI to target Muslims was monitoring 100 mosques and business in Washington DC and threatened to deport Muslims who did not agree to serve as informers.

Amateurs used their existing receivers for RTTY operation but needed to add a terminal unit, sometimes called a demodulator, to convert the received audio signals to DC signals for the teleprinter.

Selenium continues to be used in a few types of DC power surge protectors and one type of fluorescent quantum dot.

It is also used in rock, by bands and artists such as Canned Heat, The Allman Brothers Band, Led Zeppelin, Ry Cooder, Chris Rea, Bonnie Raitt, Lynyrd Skynyrd, Little Feat, Eagles, ZZ Top, Whitesnake and AC / DC.

Low-voltage DC distribution continued to be used in high-density downtown areas for many years but was eventually replaced by AC low-voltage network distribution in many of them.

Some early DC bias systems used a permanent magnet that was placed near the record head.

Although the improvements are marked with such DC bias, even more dramatic improvement results if an alternating current bias is used instead.

This can therefore be used in a DC power supply, and is also used as a demodulator of amplitude modulated ( AM ) radio signals and similar functions.