Air pressure

The amount that air is compressed, which is typically measured in "pounds per square inch" (PSI) for use in US auto body industry. However, this pressure can also be measured in ...

air pressure

Earth science; Geology

A measure of the weight of an entire air column of unit area cross section above the barometer, as a consequence of gravitational attraction, or equivalently, the force exerted by ...

air pressure

Sports; Scuba diving

The force per unit area exerted by the weight of air; at sea level the air pressure is 14. 7 psi. (air pressure decreases with altitude. )

air pressure

Science; General science

The force per unit area that the air exerts on any surface in contact with it, arising from the collisions of the air molecules with the surface. It is equal and opposite to the ...

dc motor

Household appliances; Vacuum cleaners

A heavy-duty motor designed for continuous operation.

dustbag change indicator

Household appliances; Vacuum cleaners

Vacuum cleaners with this feature will have a display that informs the user when the dustbag needs to be replaced; also referred to as a "Full Bag Indicator" or "Dustbag ...

dirt sensor

Household appliances; Vacuum cleaners

Vacuum cleaners with this feature detect whether the unit is picking up dirt, and a light will indicate whether the floor is clean or dirty.

direct connect

Household appliances; Vacuum cleaners

A type of electric system found in many newer canister vacuum cleaners in which external cords on the hoses and wands are eliminated. Instead, the electrical system is actually ...

decibels

Household appliances; Vacuum cleaners

Expressed as "dB," this is the unit used to measure the intensity of a sound and is commonly used by vacuum manufacturers to determine how loud a unit will operate.

cyclonic action

Household appliances; Vacuum cleaners

A method of vacuum filtration that separates particles from the airflow by making the air stream spin. This subjects the air stream to centrifugal force which throws dirt and ...

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Industry/Domain: Astronomy Category: Mars

Curiosity

Curiosity is NASA's car-sized, nuclear-powered Mars rover that was launched aboard a NASA spacecraft on November 26, 2011 and landed on Mars on August ...