For applications requiring direct current, the alternating current is typically distributed to a substation and then converted to direct current.
Long after the usage of direct current had been established, physicists realized that the current was made of negative electric charges, the electrons, and that the actual flow was from the negative to the positive pole (and so-called "holes" flow in the opposite direction), but by convention, the usage of the term was never changed.
Snowmobile
A snowmobile is a motorized vehicle used for travelling over snow. It is like a car, only instead of wheels, it has treads. Some snowmobiles have skis in the front for steering.
Adding snowmobile studs to the tread decreases the time and distance it takes to stop a snowmobile. Once you make a decision to stop a snowmobile, the distance it will take to stop will be a combination of the speed of the machine, weight of the machine and the available friction and or the mechanical damping (which will equal the effective drag factor) between the snowmobile and the surface on which it is trying to stop. If the surface is icy or hard-packed, the mechanical damping portion of the effective drag factor is decreased, leaving you with only the friction provided by the tread to stop.
Snowmobile studs made from steel or stainless steel with carbide tips are installed in the tread. The studs are designed for specific terrains in varying lengths, shapes and materials. The studs control acceleration, deceleration and maneuverability. The correct amount and type of stud installed in an effective pattern will produce the best traction results.
The Remo Four
The Remo Four were a rock band from Liverpool, England, from the late 1950s and early 1960s, at the same time the Beatles were starting their musical careers.
While the Beatles gained experience performing in Hamburg, Germany, the Remo Four played at American Air Force bases in France. Members of the two bands were friends, and often played at the same places back in Liverpool, or would go to watch each other perform.
After the Beatles became famous under Brian Epstein's management, Epstein signed up the Remo Four also. He worked hard to promote the band, but they never achieved massive success as the Beatles had. Epstein paired the Remo Four with a singer he also managed, called Tommy Quickly. They made a series of singles together, but none became hits. Quickly retired from music, and the Remo Four went on to work with other singers, including Billy J. Kramer. They also released an album, titled "Smile", on a German record label.
George Harrison was invited to record a movie soundtrack in late 1967. Instead of working with the Beatles, he invited the Remo Four to work with him. The movie, "Wonderwall", got little exposure, but the soundtrack album, "Wonderwall Music", became a minor hit the next year.
Magnitude (mathematics)
The magnitude of a mathematical object is its size: a property by which it can be larger or smaller than other objects of the same kind.
In mathematical language one would say: It is an ordering of the class of objects to which it belongs.
The Ancient Greeks distinguished between several types of magnitude, including:
They had proven that the first two could not be the same, or even isomorphic systems of magnitude. They did not consider negative magnitudes to be meaningful, and "magnitude" is still primarily used in contexts in which zero is either the lowest size, or less than all possible sizes.
The magnitude of a real number formula_1 is usually called the absolute value or modulus. It is written as formula_2, and is defined by:
This gives the number's distance from zero on the real number line. For example, the modulus of -5 is 5.
The magnitude of a vector formula_3 is called its norm, and is usually written as formula_4. It measures the length of the vector. For a three-dimensional vector formula_5, the norm can be calculated using the formula formula_6.
A magnitude is never negative. When comparing magnitudes, it is often helpful to use a logarithmic scale. Real-world examples include the loudness of a sound (decibel), the brightness of a star, or the Richter scale of earthquake intensity.
Because magnitudes are often not linear, they usually cannot be added or subtract in a meaningful way.
Fraction (mathematics)
A fraction is a number that shows how many equal parts there are. When we write fractions, we show one number with a line above (or a slash next to) another number. For example, formula_1, and 1/4.are different ways of writing the same fraction (in this case a quarter). The top number tells us how many parts there are, and the bottom number tells us the total number of parts.
The top part of the fraction is called a numerator. The bottom part of the fraction is called a denominator. For example, for the fraction formula_1, the 1 is the numerator, and the 4 is the denominator.
A fraction is a mathematical expression relating two quantities or numbers, where one divides the other. When the two quantities are whole numbers (or integers), this is called a rational number (such as the fraction formula_6). When the two quantities are polynomials, this is called a rational function.
Mathematically, a fraction is a quotient of numbers, representing the number's value when the numerator (upper number) is divided by the denominator (lower number). Thus formula_6 means one divided by two, or, in decimals, 0.5.
To find formula_6 of formula_6, the denominators are multiplied, and because denominator 2 multiplied by 2 equals 4, we have that formula_6 x formula_6 = formula_1, or 0.5 x 0.5 = 0.25.
To find formula_6 "divided by" formula_6, multiply formula_6 by the reciprocal of formula_6, which is 2. That answer is 1.
To multiply two fractions, the first numerator is multiplied by the other numerator, and the first denominator is multiplied by the other denominator. For example. ' x ' = '. One can simplify this by dividing both numbers by a common factor. This would be ' after the simplication.
Buckethead
Brian Patrick Carroll, better known as Buckethead, is an American musician and songwriter. As of 2016 he has released 255 solo albums. He has performed on over 50 more albums by other music artists. His music spans many different styles and genres.
When performing onstage Buckethead wears a white KFC bucket over his head and an expressionless plain white costume mask.
Although he can play many different types of musical instruments, Buckethead is best known for his guitar playing. He has been voted as a top guitarist in many magazines dedicated to the topic of guitar playing.
Buckethead records and performs onstage as a solo artist most of the time. He has also worked with a wide variety musicians including: Bill Laswell, Bootsy Collins, Bernie Worrell, Iggy Pop, Les Claypool, Serj Tankian, Mike Patton and Viggo Mortensen. Buckethead was a member of Guns N' Roses from 2000 to 2004.
Buckethead has created music for movies such as: "Saw II", "Ghosts of Mars", "Beverly Hills Ninja" and "Last Action Hero".
Quotient
In mathematics, the quotient is the end result of a division. For example, in the division of 6÷3, the quotient would be 2. Here, 6 is also called the dividend, and 3 the divisor. The quotient can thus be expressed as the number of times the divisor adds together into the dividend.
On the other hand, a quotient can also mean just the integral part of the result of dividing two integers. For example, the quotient of 17 ÷ 5 would be 3 (since 5 goes into 17 at most 3 times), whilst the remainder, the leftover of the division, would be 2.
Quotients also come up in certain tests, like the IQ test, which evaluates one's intelligence quotient. In this case, the quotient is the score of the test. In recent decades, as people begin to emphasize multi-dimensional personal development, other similar quotients (such as emotional quotient) are being developed and considered as well.
Norman language