(s l ´strä) (KEY) , town (1993 pop. 48,287), NE Bulgaria, a port on the Danube River bordering Romania. Products include textiles, furniture, foodst...
1824–1910, English astronomer. Using a spectroscope, he began to study the chemical constitution of stars from the observatory attached to his home ...
chemical compound, AgCl, a white cubic crystalline solid. It is nearly insoluble in water but is soluble in a water solution of ammonia, potassium cya...