Search results
Results from the WOW.Com Content Network
The rand replaced the pound with a decimal currency: 100 cents (100c) = 1 rand (R1), 1 rand being valued at 10 shillings and 1 cent at 1.2 pence. The coins bore the forward-facing portrait of Jan van Riebeeck on the obverse. [1] The initial circulation coins of the Republic were the following: [2] 1 ⁄ 2 cent (approximately replaced 1 ⁄ 2 d)
New 5-cent coins were introduced in 1973, followed by 10, 20 and 25 cents in 1975. Coins were struck until 1977 at the South African Mint in Pretoria. Rhodesia had both 1 ⁄ 2 Cent and 2 + 1 ⁄ 2 Cents coins, just like in South Africa. The 1 ⁄ 2 Cent coin was struck between 1970 and 1977 - with the 1977 1 ⁄ 2 Cent being extremely rare ...
X-ray diffraction computed tomography is an experimental technique that combines X-ray diffraction with the computed tomography data acquisition approach. X-ray diffraction (XRD) computed tomography (CT) was first introduced in 1987 by Harding et al. [ 1 ] using a laboratory diffractometer and a monochromatic X-ray pencil beam .
These included shells, [1] ingots, gold (gold dust and gold coins (the Asante)), arrowheads, iron, salt, cattle, goats, blankets, axes, beads, and many others. In the early 19th century a slave could be bought in West Africa with manilla currency ; multiples of X-shaped rings of bronze or other metal that could be strung on a staff.
To lower the silver/gold value of the coin by altering its purity, but with the same face value as the pure coin. This often happens during periods of high inflation. denticles Small, decorative tooth-like projecting points on the inside edge of a coin. [5] designer The artist or creator of a coin's design. [1] device
X-ray diffraction is a generic term for phenomena associated with changes in the direction of X-ray beams due to interactions with the electrons around atoms. It occurs due to elastic scattering , when there is no change in the energy of the waves.
DETROIT (Reuters) -U.S. automakers Ford Motor and General Motors will donate $1 million each, along with vehicles, to U.S. President-elect Donald Trump's January inauguration, company ...
An X-ray diffraction pattern of a crystallized enzyme. The pattern of spots (reflections) and the relative strength of each spot (intensities) can be used to determine the structure of the enzyme. The relative intensities of the reflections provides information to determine the arrangement of molecules within the crystal in atomic detail.