RAREST ELEMENT:-

	RADON
	THERE ARE ONLY 2.45 KG OF RADON ON EARTH AND IN THE ATMOSPHERE

SMELLIEST SUBSTANCE:-

	ETHYL MARCAPTAN (C2H5SH)
	ITS SMELL RESEMBLES A COMBINATION OF ROTTING CABBAGE, GARLIC, ONIONS, BURNT TOAST AND SEWER GAS

STRONGEST ACID:-

	FLUOROANTIMONIC ACID
	ACIDITY = 10,000,000,000,000,000,000 x SULPHURIC ACID

SWEETEST SUBSTANCE:-

	KATEMFE PLANT (THAUMATOCOCCUS DANIELLII
	FOUND IN WEST AFRICA
	6150 TIMES AS SWEET AS 1% OF SUCROSE (SUGAR) SOLUTION

MOST MAGNETIC SUBSTANCE:-

	NEODYMIUM IRON BORIDE (Nd2Fe14B1)
	280kJ/m(cubed)
	IT CAN ATTRACT AN OBJECT WHICH WEIGHS 1000KG AND 280M AWAY!

EXTREMES

TEMPERATURES:-

	HIGHEST= 400 MILLION DEGREES CELSIUS
	ACHIEVED USING A HYDROGEN BOMB
	LOWEST = -273.15000000000028 DEGREES CELSIUS
	ACHIEVED USING NUCLEAR DEMAGNETIZATION
	NOTE: SCIENTIST BELIEVE THAT -273.15 IS THE LOWEST POSSIBLE TEMPERATURE

LOWEST FRICTION:-

	POLYTETRAFLUOROETHYLENE
	EQUIVALENT TO WET ICE ON WET ICE

HIGHEST SPEED:-

	150KM/SEC
	ACHIEVED USING A PLASTIC DISC IN WASHINGTON, 1980

MOST POWERFUL MICROSCOPE:-
 

SCANNING TUNNELLING ELECTRON MICROSCOPE

	INVENTED BY IBM, SWITZERLAND
	CAN VIEW ONE HUNDREDTH OF THE DIAMETER OF AN ATOM

MOST POWERFUL LASER:-

	"NOVA"
	MANUFACTURED IN CALIFORNIA
	1 (FOLLOWED BY 14 ZEROS) WATTS
	POWER OUTPUT IS EQUIVALENT TO ALL ELECTRICAL POWER STATIONS IN BRITAIN PUT TOGETHER

MATHEMATICS

HIGHEST NUMBERS:-
 

HIGHEST ACCEPTABLE = CENTILLION, 1 FOLLOWED BY 600 ZEROS, ONLY USED IN BRITAIN AND GERMANY

	10 FOLLOWED BY 100 ZEROS IS CALLED A GOOGOL, A NAME SUGGESTED BY DR. EDWARD'S 9-YEAR-OLD NEPHEW
	10 TO THE POWER OF GOOGOL IS CALLED A GOOGOLPLEX
	HIGHEST NUMBER EVER USED IS 10 TO THE POWER OF 140, CALLED ASANKHYEYA. MENTIONED IN A BUDDHIST BOOK IN 100 BC

PERFECT NUMBER:-

	A PERFECT NUMBER IS A NUMBER WHICH IS EQUIVALENT TO ALL OF ITS FACTORS ADDED TOGETHER
	SMALLEST : 6=1+2+3
	LARGEST :[(2 TO THE POWER OF 756,839)-1 X 2 TO THE POWER OF 756.838]

LONGEST MEASURE OF TIME:-

	KALPA IN HINDU CHRONOLOGY
	EQUIVALENT TO 4320 MILLION YEARS

TECHNOLOGY

FASTEST COMPUTER:-

	BELONGS TO AN AMERICAN POWER STATION
	MANUFACTURE BY IBM
	THE CALCULATIONS MADE IN ONE SECOND BY THE COMPUTER COULD BE MADE IN 1 MILLION YEARS BY A MATHEMATICIAN

FASTEST PC:-

	2.5 GegaHertz
	2500 MH
	INVENTED BY SEVERAL COMPANIES

LARGEST BATTERY:-

	10MW LEAD ACID
	CALIFORNIA, USA
	COSTS 13 MILLION US DOLLARS
	USED AS A SUB-STATION FOR LEVELLING PEAK DEMAND LOADS
	MORE POWERFUL THAN MANY TYPES OF POWER STATIONS

OLDEST MACHINERY:-

	DALU
	WATER RAISING INSTRUMENT
	USED IN IRAQ
	3500 BC

COMMUNICATIONS

GREATEST NUMBER OF TELEPHONE CALLS:-

	AMERICA
	436,220 MILLION CALLS PER YEAR

BUSIEST ROUTES:-

	BETWEEN AMERICA AND CANADA
	3.3 BILLION MINUTES OF TWO-WAY TRAFFIC BETWEEN THE 2 COUNTRIES IN 1991

LARGEST TELEPHONE:-

	2.47M HIGH, 6.06M LONG
	WEIGHED 3.5 TONNES
	HANDSET= 7.14M LONG.
	COUNTRY: HOLLAND
	NOTE: THE HANDSET HAD TO BE LIFTED WITH A CRANE!