Dear All,
Here we are again. Could I have your comments, please?
Molten metal: � Castings of molten metal shrink in all directions as they
cool to ambient temperature. Iron shrinks by about 5 mm per metre and
aluminium shrinks by about 10 mm per metre.
Moon: � Today the moon will rise about 50 minutes later than it did
yesterday.
Nuts: � A kilogram of nuts in the shell will give you about 500 g when
shelled.
Office design: � A comfortable office provides about 20 m2 per person.
Designers of offices, allow 25 m2 for senior managers, 20 m2 for middle
managers, and 15 m2 for clerical workers.
Orange juice: � A single orange should produce about half a cup of juice,
that is, 125 mL. It normally takes about eight oranges for a litre of juice.
Painting with a roller: � It takes about four �dips� of a roller to cover
one square metre of wall or ceiling. Count the �dips�. About 60 �dips� will
use one litre of paint and cover about 15 m2.
Painting: � On average it takes one hour to paint 100 square metres plus an
hour for each window or door. In each hour you will use about 7 litres of
paint and cover a little over 100 m2.
Paper cutting: � To divide a piece of material into equal strips, measure at
an angle, rather than perpendicular to the side. For example, since an A4
piece of paper has a mass of approximately five grams, you can produce any
amount of 1 g masses by dividing an A4 piece of paper into 5 equal strips.
Rule a diagonal (of about 365 mm), divide it into 91 mm portions, and then
rule four parallel lines to divide the A4 sheet into five parts, where each
part will have a mass of about 5 grams.
Parking: � If you are estimating the size for a car park, allow 30 m2 per
car. This will allow enough for the 15 m2 needed for each car (2.5 m x 6 m)
plus enough for the driveways.
Photographic aperture: � For sunsets, measure the light from the area of sky
directly above the Sun and use this setting as the basis for your exposure.
If you close your aperture by one f-stop you will produce an effect of a
picture taken a half an hour later than the time you made the exposure.
--
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
