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Mengzi

(Encyclopedia)Mengzi or Meng-tzu both: mŭng-dzŭ [key], city, SE Yunnan prov., China, c.12 mi (20 km) E of Gejiu. It is the commercial hub of a district where tin and antimony are mined. ...

Lémery, Nicolas

(Encyclopedia)Lémery, Nicolas nēkôläˈ lāmərēˈ [key], 1645–1715, French chemist. He was a pharmacist and lecturer in Paris and was the author of a standard textbook in chemistry (1675) and of a treatise o...

britannia metal

(Encyclopedia)britannia metal, silvery-white alloy of tin with antimony, copper, and sometimes bismuth and zinc. It is very similar in appearance to pewter, but is harder. It is used widely for the manufacture of t...

Elementary Particles (table)

(Encyclopedia)Elementary Particles Leptons Quarks1 Gauge Bosons Some Sample Hadrons For each of these particles, except the photon, gluon, and Z-boson, there is an antiparticle with the same mass and op...

Chinese Dynasties (table)

(Encyclopedia)Chinese Dynasties

Geologic Timescale (table)

(Encyclopedia)Geologic Timescale 1 Not an era but the time preceding the Cambrian. ...

Morse Code (table)

(Encyclopedia)Morse Code International Morse Code American Morse CodeThe American Morse differs in the following symbols: ...

Nobel Prizes (table)

(Encyclopedia)Nobel Prizes

Trigonometric Functions (table)

(Encyclopedia)Trigonometric Functions

Radio Frequencies (table)

(Encyclopedia)Radio Frequencies