Now you Know

13283. Invention
Invention : ultrasound imaging, obstetric
Year : 1958
Inventor : ian donald
Country : uk.

13284. Invention
Invention : vaccination
Year : 1796
Inventor : edward jenner
Country : england.

13285. Invention
Invention : vacuum cleaner, electric
Year : 1901
Inventor : herbert cecil booth
Country : uk.

13286. Invention
Invention : velcro
Year : 1948
Inventor : george de mestral
Country : switzerland.

13287. Invention
Invention : vending machine
Year : c. 100-200 bc
Inventor : -
Country : egypt.

13288. Invention
Invention : viagra
Year : 1997
Inventor : pfizer inc.
Country : us.

13289. Invention
Invention : video games
Year : 1972
Inventor : nolan bushnell
Country : us.

13290. Invention
Invention : videocassette recorder
Year : 1969
Inventor : sony corp.
Country : japan.

13291. Invention
Invention : videotape
Year : 1950s
Inventor : charles ginsburg
Country : us.

13292. Invention
Invention : virtual reality
Year : 1989
Inventor : jaron lanier
Country : us.

13293. Invention
Invention : vision correction, laser
Year : 1987
Inventor : stephen trokel
Country : us.

13294. Invention
Invention : washing machine, electric
Year : 1907
Inventor : alva j. fisher
Country : us.

13295. Invention
Invention : wheel
Year : about 3500 bc
Inventor : proto-aryan people or sumerians
Country : russia/kazakhstan or mesopotamia.

13296. Invention
Invention : wheelbarrow
Year : 1st century bc
Inventor : -
Country : china.

13297. Invention
Invention : wheelchair
Year : 1590s
Inventor : -
Country : spain.

13298. Invention
Invention : windmill
Year : 644
Inventor : -
Country : persia.

13299. Invention
Invention : wine
Year : before 4000 bc
Inventor : -
Country : middle east.

13300. Invention
Invention : world wide web
Year : 1989
Inventor : tim berners-lee
Country : uk.

13301. Invention
Invention : wristwatch, digital
Year : 1970
Inventor : john m. bergey
Country : us.

13302. Invention
Invention : x-ray imaging
Year : 1895
Inventor : wilhelm conrad rontgen
Country : germany.

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Vitamin
Vitamin : b2 (riboflavin)
Occurrence : milk products, meat, wholemeal cereal, cheese, eggs, liver, sea-fish, green leafy vegetables, whey powder
Lack : (rarely) skin inflammation, brittle nails, anaemia, callus attrition
Daily need : approx. 2 mg.      .. More >>
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