How to Learn the Meanings of Subway Signals?

Answer Subway control and signaling is a complicated process in many large cities with underground transit systems. People expect to be able to take the subway without danger of accidents or delays. Some ... Read More »

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How to Learn English When There Are Multiple Meanings to Words?

English has one of the largest vocabularies of any language. Many words in English have multiple meanings and can be used as a concrete noun, abstract noun or as a verb. As English has evolved, man... Read More »

How do they get the subway trains into the subway 10 points for a smile!?

The ones I normally take seem to have come via the sewer system

A spacecraft is approaching the earth. realitive to the radio signals it sends out the signals recieved on the?

Wavelength is equal to The Speed divided by the frequency; L = v / fIf v is increased by the spacecraft approaching the earth as v+n, then the wavelength is longer and the frequency is unchanged.So... Read More »

Is there a video tutorial on how to correctly monitor digital tv signals I remember seeing one for composite signals. I am using a Harris TVM950.?

You might like to take a look at the Tektronix website which has some brief descriptions of analog, SD SDI and HD SDI signals. Their tutorials are based on the use of their own signal monitors of c... Read More »