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Raspberry Pi

Raspberry Pi – a credit-card-sized single-board computer developed in the UK by the Raspberry Pi Foundation with the intention of … More

re-engineering mosquitos

In a single year, there are 200-300 million cases of malaria and 50-100 million cases of dengue fever worldwide. So: … More

reciprocating engine

Reciprocating engine – also often known as a piston engine, is a heat engine that uses one or more reciprocating … More

recreational boating

Recreational boating Design – boat hull, structure, gear general – hull – mono, multi. structure, materials – wood, steel, fiberglass, … More

railroad

Rail transport – a means of conveyance of passengers and goods by way of wheeled vehicles running on rail tracks. … More

Radon detector

Radon Worldwide, naturally occurring radioactive radon gas seeps from rocks and soils, where it can accumulate in buildings at hazardous … More

make recycled paper

Recycle paper To recycle paper you need: used paper hot water a large bowl an egg beater or fork 2 … More

radio

Pictured – An early transistor pocket radio by Motorola. The first Motorola brand automobile radio was produced in 1930. Motorola … More

radar

Radar – a system that uses electromagnetic waves to identify the range, altitude, direction, or speed of both moving and … More

pump

Pump – a device used to move gases, liquids or slurries. A pump moves liquids or gases from lower pressure … More

quantum mechanics

quantum mechanics Laser – acronym for Light Amplification by Stimulated Emission of Radiation. Laser light is usually spatially coherent, which … More

Python

python.org – Python is powerful… and fast; plays well with others; runs everywhere; is friendly & easy to learn; is … More

questions

Isidore Isaac Rabi, winner of a Nobel Prize for physics, when asked why he became a scientist, replied, “My mother … More