By Neil Davis
Do iceworms devour ice? are you able to pay attention the aurora? How does mosquito repellent work? Why are Alaskan volcanoes lightly spaced alongside the coast? Is it attainable for decent water to freeze speedier than chilly water? the place are Alaska's greater than a hundred twenty five scorching springs? Why are northern twilights so long? Do glaciers slide or do they flow? Why do snowflakes flutter as they fall? In Alaska technology Nuggets, Neil Davis solutions those and lots of different interesting questions within the wonderful and informative variety that makes him one in every of Alaska's favourite technology writers. This compendium of approximately four hundred articles, together with articles via different individuals to a technology column carried by means of numerous Alaska newspapers, discusses phenomena as assorted because the northern lighting fixtures, permafrost, glaciers, meteorology, volcanoes, earthquakes, archaeology, Alaskan crops, mammoths, early people, and northern living. Tourists and long-time Alaskans alike have made this much-loved ebook a bestseller for years. Alaska technological know-how Nuggets is a smart reference or reward for a person attracted to the outstanding average heritage of the North.
Read Online or Download Alaska Science Nuggets (Natural History) PDF
Best state & local books
A debatable score of the Revolution's largest battles, occasions, and leaders the yankee Revolution a hundred brings you onto the charred battlefields and contained in the maneuverings of the struggle that produced the USA. In finished style it explains, analyzes, and ranks the war's most important occasions, leaders, and battles in accordance with their value.
In Volunteer Forty-Niners, Walter T. Durham offers the 1st complete exam of the function Tennessee and Tennesseans performed in making a new country and a brand new society at the West Coast. Drawing from such archival resources as own narratives in letters and diaries, public files, and newspaper reviews, Durham has woven a wealth of data into his recounting in their adventures.
In 1941, while the japanese bombed Pearl Harbor and the U.S. came across itself in a complete warfare, the folk of Texas rallied to the struggle attempt. women and men rushed to affix the military. those that remained behind—men, ladies, and children—were infantrymen at the domestic entrance: They rolled bandages, noticed plane, informed for air raids, crammed jobs left vacant by means of provider males, gathered scrap scrimped and stored and acquired by means of with rationed sugar, meat, footwear, tires, and fuel.
Texas has lengthy boasted its iron fist of the legislation and strict remedy of its toughest criminals. however, scoundrels, fiends and homicidal criminals necessarily slipped during the Lone celebrity justice process regardless of the easiest efforts of even the mythical Texas Rangers. From roadside homicide to political assassinations, realize the seedy underbelly of Texas' murderous prior.
- New Hampshire (Thirteen Colonies)
- Blacklegs, Card Sharps, and Confidence Men: Nineteenth-Century Mississippi River Gambling Stories (Southern Literary Studies)
- The Empire State Building
- The Personal Correspondence of Sam Houston, Volume IV, 1852-1863
- Late Prehistoric Florida: Archaeology at the Edge of the Mississippian World
Extra info for Alaska Science Nuggets (Natural History)
That glow is caused by the atoms and molecules being struck by charged particles, mostly electrons and protons, that originated on the sun. These particles stream out from the sun and normally are guided by the earth's magnetic field into the polar regions where they enter the atmosphere and make it glow. The proper name for the aurora of the Southern Hemisphere is the aurora australis. Together the aurora australis and the aurora borealis are known as the aurora polaris. Nowadays the simple name aurora is mostly used, as is the name Northern Lights.
So far, no one has any concept of how the auroral currents could be harnessed for useful purpose. In fact, as far as the works of man are concerned, the intense currents are more harmful than helpful. Though the auroral electrojets are high above our heads, they do induce similar currents in the conducting earth beneath our feet, and in other conductors such as electrical transmission lines and metal pipelines. Like the aurora, the auroral electrojets change rapidly with time. The strongest currents may last only a few minutes, and much of the time they are quite weak.
They continuously boil off the sun's surface and speed outward in all directions, to distances well beyond the earth. Compared to the number of air molecules at the earth's surface, the number of particles in a unit volume of the solar wind is tiny, in fact, more than a billion billion times less. The density of particles in the wind is only about one per cubic centimeter, a density considered on earth to be an excellent vacuum. Even though the solar wind has so few particles per unit volume, the wind has a profound effect upon the earth, especially at high latitudes.