signal strength signal quality

What is the Difference Between Digital and Analog Signals? - A computer performs its tasks by turning on and off a series of electronic switches represented by the numerical digits of 0 and 1. A 0 is the code for off, and a 1 is the code for on. Combinations of these digital codes represe..

Attenuation - is undesirable because it reduces signal strength at the receiver. More serious, however, is distortion interference, and noise, which appear as alternations of the signal shape. Although such contaminations may occur at any point, the standard convention..

Mediators amplify the signal in an expanding cascade of response. A single -subunit of insulin receptor, for example, activates many molecules of DG, and each protein kinase C molecule activated by DG will, in turn, activate many other enzyme molecules. DG and IP 3 are examples of secon..

A computer performs its tasks by turning on and off a series of electronic switches represented by the numerical digits of 0 and 1. A 0 is the code for off, and a 1 is the code for o..

is undesirable because it reduces signal strength at the receiver. More serious, however, is distortion interference, and noise, which appear as alternations of the signal shape. Although such contaminations may occur at any point, the standard convention is to blame ..

They are widely used in science research laboratories by scientists for converting electrical signals into visual signals and television tubes. Doctors use them for converting electrical impulses corresponding to heart beats into visual signals..

The input transducer converts the message to an electrical signal say a voltage or current. Another transducer at the destination converts the output signal to the desired message fo..

Scattering of Light - When light passes through a substance or gas, a part of it is absorbed and the rest scattered away. The basic process in scattering is absorption of light by the molecules followed by re-radiation in different directions. The strength of scattering can be measured by..

(i) Linearity (ii) Sensitivity (iii) Signal handling capacity Linearity is determined by how accurately the output of the detector follows the input signal. If the variation in the amplitude of output is proportional to the input amplitude, the detector is said to be linear. Th..

When propagation is over a good conductor like seawater, particularly at frequencies below about 100 kHz, surface absorption is small. Also, the attenuation due to the atmosphere is small. Thus, the angle of tilt is the main determining factor in the long distance propagation such waves. The degre..