Sunday, November 11, 2012

తప్పక తెలుసుకోవాలి:ఈ ముఖ్యమైన టెక్నాలజీలను కనుగొన్నది ఆస్ట్రేలియాలో....ఫోటోలు

Plastic Banknotes....1988....Reserve Bank of Australia

Dispensable Syringes...1951...Harry Willis

Super Sopper Rollers....1974....Gordon Withnall(to soak up excess water from sport fields after a heavy rain)

Mountbatten Braillers....1991....Ernest Bate(portable battery-powered braille writer for people with impaired vision)

Dual-flush Toilet....1980....Bruce Thompson

Hills Clothes Hoist....1945...Lance Hill

Ultrasound Machine....1976....Commonwealth Acoustic Laboratories

Cochlear implants....1985....Graeme Clark(bionic ear for impaired hearing)

Black Box Flight Recorders....1958....Dr. David Warren

Wifi....1999.....John O’Sullivan

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