Word: layers
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Dates: during 1950-1959
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Sunspots are storms in the sun's surface layer of bright, turbulent gas. They send out blasts of radiation and high-speed particles that hit the earth's atmosphere and form ionized (electrified) layers at high altitudes. Ordinary sunlight does this too, but sunspots beef up the layers and make them strong enough to divert TV signals that would normally pass through into outer space...
...carried from 2 to 3 colts Revolvers" and knew how to use them. He was a wagoner, a cobbler, a woodsman, a cattle breeder, a farmer, a doctor of sorts who could perform a "surguicicle operation," an impassioned preacher, a shrewd businessman, a layer-on of hands, a seer of fascinating visions. He was one of the toughest men that ever walked, but the Indians (who ate out of his hand) named him Yawgawts, which means Cry-Baby (Lee himself preferred to render it "Man of Tender Passions"), and his foster-father once exhorted him, saying: "I want...
...level below the hand-ax layer contained mollusks that lived during one of the interglacial warm periods. The hand-ax layer itself was sprinkled with black pumice, a sure sign of volcanic activity. As Professor Blanc reconstructs it, the earliest Romans lived in a moderately warm climate on the shore of a vast lagoon that.covered the present site of Rome. The Torre site may establish what has long been suspected by Italian paleontologists: that Central Italy is one of earth's oldest inhabited places. Confirmation of this theory depends on Blanc's efforts to find human bones...
Long radio waves can be used to send code and voice across the oceans because they are deflected downward by ionized layers in the atmosphere, and therefore follow the curve of the earth. They cannot be used for television chiefly because they do not offer a wide enough band of frequencies. The shorter waves, including those that are used for TV, pass through the ionized layer and are lost in space...
...long-range study of the upper atmosphere. Part of the "air glow" (the faint glow of the night sky) comes from sodium atoms that absorb solar energy during the day. At night they give off this energy as yellow sodium light. Scientists do not know how high the "sodium layer" is. Nor do they know how the sodium got into the top of the atmosphere. Some think it came from outer space; others suspect that it originated as fine particles of sea salt that were carried upward...