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Soap bubble
A soap bubble is a very thin film of soap water that forms a hollow sphere with an iridescent surface. Soap bubbles usually last for only a few moments and then burst either on their own or on ... > more -
Catalytic converter
A catalytic converter is a device used to reduce the emissions from an internal combustion engine. Most commonly used in an automobile's exhaust system, catalytic converters are now commonly used on ... > more -
Black body
In physics, a black body is an object that absorbs all electromagnetic radiation that falls onto it. No radiation passes through it and none is reflected, yet in classical physics, it can ... > more -
Hydrochloric acid
The chemical substance hydrochloric acid is the aqueous (water-based) solution of hydrogen chloride (HCl) gas. It is a strong acid, the major component of gastric acid and of wide industrial use. As ... > more -
Architecture
Architecture is the art and science of designing buildings and structures. A wider definition would include within its scope the design of the total built environment, from the macrolevel of town ... > more -
Cruise missile
A cruise missile is a guided missile which uses a lifting wing and most often a jet propulsion system to allow sustained flight. Cruise missiles are, in essence, unmanned aircraft. They are generally ... > more
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