How is the information revolution different from the industrial revolution?

How is the information revolution different from the industrial revolution? The easiest change to spot is the level of specialisation that the average role requires. The Industrial Revolution created modern industry as we understand it today. The Information Revolution has pushed individuals to become highly specialised in how they contribute to bigger industrial efforts. Why […]

How do astronauts train for EVAs?

How do astronauts train for EVAs? One way astronauts train for spacewalks is by going for a swim. Floating in space is a lot like floating in water. Astronauts practice spacewalks underwater in a large swimming pool. The pool is called the Neutral Buoyancy Laboratory, or NBL. Why is a spacewalk exhausting? Because the air […]

What is the coefficient of X?

What is the coefficient of X? A number used to multiply a variable. Example: 6z means 6 times z, and “z” is a variable, so 6 is a coefficient. Variables with no number have a coefficient of 1. Example: x is really 1x. Sometimes a letter stands in for the number. What is the coefficient […]

What is vertical position in welding?

What is vertical position in welding? A “vertical weld” is defined as a weld that is applied to a vertical surface or one that is inclined 45 degrees or less (fig. 7-35). Welding on a vertical surface is much more difficult than welding in the flat or horizontal position due to the force of gravity. […]

How is gain measured on an amplifier?

How is gain measured on an amplifier? Amplifier gain is simply the ratio of the output divided-by the input. Gain has no units as its a ratio, but in Electronics it is commonly given the symbol “A”, for Amplification. Then the gain of an amplifier is simply calculated as the “output signal divided by the […]

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