Number 12 in Science & Technology

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Prefix: T, Tera- = 1012.

 

American

British

Number

(no entry)

septendecillion

10102

septendecillion

nonillion

1054

nonillion

quintillion

1030

quintillion

trillion

1018

trillion

billion

1012

billion

milliard

109

 

 The (assumingly maximum) number of scales in the Richter Magnitude scale to describe earthquake strength, based on its energy released, even though, theoretically, it is an open-ended scale. There is also Mercalli Intensity scale, based on the actual observation of the resulting damage (usually written in Roman letters from I to XII).

 

The Beaufort scale was devised by the British Admiral Sir Francis Beaufort (1774-1875), for estimating wind speed by observing the effects of the wind on sailing ships (or in land).  It has scales from 0 to 12. The 12th scale is classified as the hurricane of Category 1 in the Saffir-Simpson Hurricane Intensity scale, as in the following table:

Scale (Category)

Wind Velocity (miles/hour)

Category 1

74-95 mph

Category 2

96-110 mph

Category 3

111-130 mph

Category 4

131-155 mph

Category 5

> 156mph.

 

The number of men who were on the Moon. (All are U.S. citizens).

 

One of the standardized numbers of exposures in a roll of 35-mm camera films: 12 – 24 – 36.

 

The popular battery voltage for automobiles: 12V.

 

The usual number of marks for hours shown on a classical clock.

 

The popular Alkaline-Manganese battery voltages for household electronic devices: 1.5V – 3V – 4.5V – 6V – 9V, available in popular sizes: AAA, AA, C, D, G and N. The Carbon-Zinc batteries have additional values: 12V – 22.5V – 45V and 90V. Other values: PP3 – 1.2V – 3.6V – 4.8V – 8.4V for Ni-Cad rechargeables.

 

[Tech.]  The number of digits in a complete barcode or UPC Version A (Universal Product Code for North America) barcode: 1-digit number system (type of product: 0 and 7 for groceries, 2 for weight items, 3 for drugs and health products and 5 for coupons), 5-digit manufacturing code, 5-digit product code and 1 check digit at the right end. Sum of 6 odd-position digits (from left), multiplied by 3, added the sum of 5 even-position (from left) digits and the check digit must be divisible by 10.

 

The “number system” code of an EAN-13 barcode for the U.S. and Canada’s products: 00, 01, 02, 03, 04, 05, 06, 07, 08, 09, 10, 11, 12 and 13.