ampli-, ampl- +

1. Of large or great size, amount, extent, or capacity: "They had an ample living room for the party."
2. Large in degree, kind, or quantity: "She was receiving an ample salary."
3. More than enough or more than normal.
3. Fully sufficient to meet a need or purpose: "They also had ample food for the guests at the party."

1. The act or process of making something louder.
2. The production of an output of greater magnitude than the input; for example, the act or process of making something larger, greater, or stronger.
3. The act or process of making a spoken or written account fuller or clearer. 4. In electronics, an increase in the magnitude of a signal produced by an amplifier.
5. A detail, explanation, or illustration added to a spoken or written account to make it fuller or to clarify it.
6. Genetics gene reproduction or the production of many copies of a section of DNA, naturally or by technological means.

A rapid method for detecting variations in DNA sequences between individuals, using the polymerase chain reaction technique.

1. Something that amplifies, enlarges, or extends.
2. In electronics, a device, especially one using transistors or electron tubes, which produces the amplification (increase) of an electrical signal.
3. A device that makes sounds louder; especially, one that increases the sound level of musical instruments.
4. An electronic device that increases the magnitude of a signal, voltage, or electric current.

1. To make larger or more powerful; to increase.
2. To add to, as with illustrations; to make complete.
3. To exaggerate.
4. To amplify an electrical signal.

1. Having copious abundance.
2. Largeness in size, volume, or extent.
3. Having an amount that is more than required>
4. The farthest distance that a vibrating or oscillating system travels from a mean or zero point.
5. In electronics, the maximum value of signal or the maximum value of an alternating signal.
6. In sports, the height reached by a snowboarder or the degree of height a rider can achieve above the lip of a pipe.

1. The deliberate processing of a carrier signal so that its amplitude varies in accordance with the level of the modulating signal.

It is used in ordinary radio broadcasting; such as, AM radio, and in transmitting the video portion of a television signal.

2. Variation of the amplitude of a carrier wave (commonly a radio wave) in correspondence to fluctuations in the audio or video signal being transmitted.
3. Changing the amplitude of a radio wave.

A higher wave is interpreted as a "1" and a normal wave is interpreted as a zero.

By changing the wave, the RFID tag can communicate a string of binary digits to the reader.

Computers can interpret these digits as digital information. The method of changing the amplitude is known as amplitude shift keying, or ASK.

1. Having or providing enough or more than enough of what is needed: "They had ample money for their trip to France."
  2. Quite large: "The waitress gave him an ample serving of pie and ice cream."

The maximum absolute value of a periodic curve measured along its vertical axis (the height of a wave, in layman's terms).

The increase in concentration of a pollutant from one trophic level in a food chain to another; this usually occurs when the pollutant is metabolized and excreted much more slowly than the nutrients that are passed from one trophic level to the next.

Such pollutants are long-lived, mobile, soluble in fats, and biologically active.

Biomagnification is a particular threat for species living at the top of food chains.

1. A system composed of several waveguides arranged symmetrically about an excitation medium so that they are excited with equal amplitude and phase to provide an effective energy gain.
2. Large numbers of waveguides symmetrically arranged with respect to an excitation medium in order to become excited with equal amplitude and phase to provide a net gain in energy.

1. An amplifier circuit characterized by low-current drift and input-current offsets, and adequate power and current sensitivities, such that it is capable of measuring extremely low current variations in a circuit.
2. A low-noise amplifier having sufficiently low current drift and other characteristics required for measuring very low currents.

1. A circuit which uses electron tubes to provide the additional power needed to amplify a signal.
2. An amplifier in which electron tubes provide the required increase in signal strength.

1. A device that boosts a signal by varying the energy pumped from an electrostatic field into an electron beam traveling down the length of a tube, and then manipulating the beam at either end of the tube.
2. A parametric amplifier in which energy is pumped from an electrostatic field into a beam of electrons traveling down the length of the tube, and electron couplers impress the input signal at one end of the tube and translate spiraling electron motion into electric output at the other end.

An amplifier consisting of an electron-gun modulation system, semiconductor target and output coupling network all within a glass or ceramic envelope.

The semiconductor target is a pair of silicon diodes, each consisting of two metallic electrodes with a pn (positive-negative) junction under the top contact.

A pn junction or a diode (one way valve) is a pn junction with p-type (positive-type) on one side and n-type (negative-type) on the other side.

When a positive voltage is applied to the p-type side (forward bias), it shrinks and overcomes the depletion zone, causing the current to flow from the p-type to the n-type side. When a negative voltage is applied to the p-type of the diode (reverse bias), it increases the depletion zone and prevents current from flowing.

The amplifier operation is based on the fact that a modulated electron beam can control the current in a reverse-based semiconductor junction.