Magic Number

Correct! A too-easy question again.

UK got bigger gallons...but US has lower prices....yukyuk

UK has funny names for stuff too.

When you left our shores you took with you a language of great beauty, what have you done to it over the years?

It is not so much what we have done with it, but every immigrant brings something with them to add to it, or subtract from it such as the failure to use pronouns, definite articles and such.

Since we have no kings over here (other than Elvis or Bob Wills), we need not use the King's English. Last time you Brits trying shoving something down our windpipes, we pretty such reloaded the gators and you boys in red were seen running the other way.

A visit to the Clovis , NM recording studios of Norman Petty will verify this....

Battle of New Orleans by Johnny Horton

enough said.

I resemble that remark!

How the heck did you know this???

The clues were all there, and google is very intuitive....

Oh.

I thought those were the numbers per million of taxi drivers who speak English.

Curiously there are approx. 28 L to the CuFt also 28g to the Oz.

At least cubic feet and litres are universal, which is more than you can say for fluid ounces and gallons.

I guess we are all very familiar with these "universal" measurements, just imagine if someone had started with other units, we may have been using furlongs per firkin. I am not going to figure out the metric equivalent here.

28.3 g to an avoirdupois ounce and 31.1 g to a troy ounce.

I forget the origin of Avoirdupois and Troy ounce, and am too lazy to Google it right now. Do you remember?

Good question. I think the Avoirdupois has something to do with 1/16 of a pound. A troy ounce is related to a pennyweight (20 dwt to a troy oz). Prior to being in the jewelry business, I can't remember using the term troy ounce or pennyweight, except in a science or math class.

Here's something else I learned from the jewelry business. A carat (weight unit of a gemstone) = 1/5 gram. So a 5.00 carat diamond weight one gram! That's a big diamond!

Q. When should one not respect an apothecary?

A. When he does not give a drachm for your scruples.

Actually, avoirdupois is a medieval system of measures from which the imperial system evolved.

Yes. This makes for a good quiz question; "Which is heavier an Oz of lead or an Oz of gold?" It is, as you say, the gold. BUT a pound of lead is heavier than a pound of gold. Jim

An Oz is an Oz is an Oz is an Oz! And both will fall at the same speed in vacuum.

It all depends on the crown's definitions and statutory units of ounces and pounds.

A Pound Sterling (£) worth of lead is very heavy compared to a Pound Sterling (£)

worth of gold.

Customary weight in the British system: Three definitions of the pound:

Units of Weight

The pound (lb) is the basic unit of weight (which is proportional to mass). Within the English units of measurement there are three different systems of weights. In the avoirdupois system, the most widely used of the three, the pound is divided into 16 ounces (oz) and the ounce into 16 drams. The ton, used to measure large masses, is equal to 2,000 lb (short ton) or 2,240 lb (long ton). In Great Britain the stone, equal to 14 lb, is also used. The troy system (named for Troyes, France, where it is said to have originated) is used only for precious metals. The troy pound is divided into 12 ounces and the troy ounce into 20 pennyweights or 480 grains; the troy pound is thus 5,760 grains. The grain is also a unit in the avoirdupois system, 1 avoirdupois pound being 7,000 grains, so that the troy pound is 5,760/7,000 of an avoirdupois pound. Apothecaries' weights are based on troy weights; in addition to the pound, ounce, and grain, which are equal to the troy units of the same name, other units are the dram (1/8 oz) and the scruple (1/24 oz or 1/3 dram).

That should be about as clear as mud. No wonder the 17th Century marked the beginnings of the metric system in both England and France, although France obviously became the first to adapt a metric system, it was not finalized actually until the beginning of the 20th Century with the addition of other fundamental base units.

Yes, you got it. GA To summarise; 1oz Avoir. = 28g x 16 - 1 pound Avoir. 1oz Troy = 32g x 12 = 1pound Troy. no need to say these are approximate. The Avoir. and Troy standards are not as precise as the modern standards for gram.

Yes, last time anyone checked, gravitation acceleration only changes minutely as one moves from one point on the planet's surface to another. This is because the first mass in the equation (Earth mass) is not a point mass at all, and really, neither is the object being allowed to fall in the vacuum. More rigorously, the size of the object does matter in the limit that it may no longer be considered to be a point mass, i.e., a large hollow sphere. The top of the ball is not accelerated identically to the bottom of the ball, so tell me does it matter in calculating the time at which it strikes the ground? Do we have to derive the gravitational force every time we put a new shape into play, or does symmetry rule out?

Every point mass attracts every single other point mass by a force pointing along the line intersecting both points. The force is proportional to the product of the two masses and inversely proportional to the square of the distance between them:[2]
{\displaystyle F=G{\frac {m_{1}m_{2}}{r^{2}}}\ } where: F is the force between the masses; G is the gravitational constant (6.674×10−11 N · (m/kg)2); m1 is the first mass; m2 is the second mass; r is the distance between the centers of the masses. -Wikipedia article on Newton's Law of Universal Gravitation

Why are the numbers magic ? Are all numbers magic ? Has an incantation or special blessing been applied to these numbers to set them apart from all of the ordinary numbers ? This is an engineering website so could these be specific mathematical numbers ?

LOL, where does this guy get his material ?