Archive for May, 2009
Monthly Archive
Sunday, May 24th, 2009
Factors affecting fuel consumption
Just thinking out loud… Consider a 2 litre petrol engine, idling at 720 rpm or 12 revs/sec. It takes two revolutions for each cylinder to complete its cycle (4 stroke assumed), so 6 cycles/sec. The amount of air/fuel mixture drawn into the cylinder(s) is 2 litre per cycle, or 12 litre/sec. At 7200 rpm it […]
Comments Off on Factors affecting fuel consumption - Posted in Economics,Science by Happy
Friday, May 22nd, 2009
Why do they use weather-speak?
I am continually annoyed by the language used in weather forecasts. Why can’t they speak English? Example: “A trough and low over the east are generating widespread heavy rain and damaging winds over northeast NSW, leading to flooding and dangerous surf. A vigorous front is crossing the WA west coast, causing destructive winds, squally showers […]