Dear All,
Comments, please.
Diamonds: � A diamond will have only half of its rough mass after it has
been cut and polished. A 400 mg stone can be cut and polished to a 200 mg
stone.
Drums � 200 L: � When the 200 L drum was first used in Australia it was
measured and found to contain 43.993849 imperial gallons; it has been called
a �forty-four� ever since. (In the USA the same 200 L drum was measured and
found to contain 52.834435 US gallons; in that nation, it has been called a
55 gallon drum ever since). The design of the 200 litre (200 L) seems to
have had two principle criteria: the design had to be related to the
International Volume Standard - the cubic metre (m3) - and it had to be
liftable by (usually two) humans. A standard 200 L drum holds 200 L of
liquid and has an air space of about 8 L.
Drums � 20 L: Twenty litre motor oil drums were designed so that 10 of these
smaller drums could be filled from a standard 200 L drum.
Drying Herbs: � Since it takes about a kilogram of fresh herbs to make 250 g
of dried herbs multiply or divide by four to change from one to the other
when you are adapting a recipe.
Ears pop: � If your ears pop in an elevator or a plane you are probably
travelling vertically faster than 7.5 m/s.
Energy output: � You can estimate that people at a party are emitting about
250 W of heat energy; that�s a 1000 W or 1 kW for every four people. Ten
people will raise the temperature of a medium size room by 1 �C per hour.
Energy human: � At rest your body runs on about the same amount of energy as
a 100 W light bulb. Like the 100 W light bulb, you use 100 joule of energy
per second; 6 000 J per minute (6 kJ/min); 360 kJ/h; or 8 640 kJ/d. Of your
power rating of 100 W: 25 W goes to muscles including your heart, 25 W goes
to your liver and spleen, 20 W goes to your brain, and 30 W is for all other
organs and digestion.
Energy saving: � In energy terms it pays to turn off your car�s engine if
you expect to be idling in traffic for more than one minute.
Estimating size: � If you hold a pencil (7 mm diameter) vertically at arms
length (700 mm) it will cover a distance of 10 m wide 1000 m (1 km) away.
This ratio (100:1) also holds for other items; a match 2 mm wide will cover
a little under 3 m at a distance of 1 km.
Exercise: � One kilometre swimming uses about the same energy as four
kilometres running or ten kilometres cycling.
--
Cheers,
Pat Naughtin
CAMS - Certified Advanced Metrication Specialist
- United States Metric Association
ASM - Accredited Speaking Member
- National Speakers Association of Australia
Member, International Federation for Professional Speakers
