What is significant about the May 29 1919 solar eclipse?

How does the age of the oldest continental crust compare to the age of the oldes tocean crust? Discuss in detail the design of control unit for basic system? Why urea has sharp melting point but glass does not? Would the electrolysis process be useful on the moon? What is the colony colour of bacillus on Msa agar? What is the water area of Kentucky? When a hammer break s a large rock into smaller pieces the broken rock is on example of what kind of change? What is the maximum number of moles of carbon dioxide that could be produced when 105 grams of oxygen are reacted with excess of butane C4H10? When was Redox Brands created? What best describes the bonding between oxygen and a third hydrogen atom to form the hydronium ion H3O? What is a local regulator responsible for activating an enzyme that relaxes smooth muscle cells? What is meant by pus cells in microscopic examination of centrifuged deposit during routine urine examination? What dosage of milk of magnesia should you give to your five month old baby? What are some differences between Oceania and Australia and Asia? Abiotic and biotic factors can interact together or independently? What force do scientists think was responsible for clumping matter together to from the first starts after the big bang? Does water boil faster with dissolved solids? An ordinary household electric lamp takes about 1 amp will it be safe to connect it directly to the dry cell? How fast can uranus winds get up to? Chromium iii oxide reacts with hydrogen sulfide h2s gas to form chromium iii sulfide and water how many grams of cr2o3 are required to produce 421 g of cr2s3?