4 posts • joined 20 Dec 2012
"the Higgs boson could decay directly to bosons or fermions"
So Higgs bosons are supposed to give mass to everything, and they can decay into bosons and other stuff, but bosons have mass and therefore must contain Higgs bosons...
So where is the other stuff supposed to come from?
The current Hong Kong international Airport is Chek Lap Kok Airport. Kai Tak Airport - which had the interesting approach path - closed in 1998.
Re: Low earth orbit question ....
Gravity doesn't know about the rotation of the earth, but the rotation gives about a 1000mph start to anything launched in that direction. As the inclination angle increases, the effect reduces and you have to put more effort into getting to orbit, until you get to a polar orbit when you get no help at all from earth's rotation. Since "The biggest cost is getting the things into orbit", it's cheaper to put satellites into an equatorial orbit.
Re: Ha !
Imperial not complicated?
Where 1 pound of gold is lighter than 1 pound of coal and 1 ounce of gold is heavier than 1 ounce of coal?
(I hate people comparing gold and feathers and claiming they are the same)
Precious metals are normally weighed in Troy-weight and everything else in Avoirdupois. There are 480 grains to a troy ounce, 437½ grains to an avoirdupois ounce (gold is heavier) but only 12 ounces in a troy pound instead of 16 avoirdupois, so we have 5,760 grains against 7000 grains for the pound measurements. Both systems use the same grain, which is defined in terms of the kilo these days, so the imperial system is now based on the metric system anyway.
If you want to buy precious metals, make sure you know how heavy a pound is, or use kg.
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