Where am I? This was a cruel question for sailors before John Harrison.
In 1707 a fleet of British warships mistook their location and sailed onto the rocky Scilly Islands. Two thousand men drowned. The Royal Navy offered a prize of £20,000 (3 to 4 million dollars in today’s money) for anyone who could provide a way for ships to find their position. North and south latitude wasn’t the problem. Tables gave the positions of the sun, moon and stars above or below the equator. Navigators could use a sextant (it measures angles between the ocean horizon and a celestial body) to find a ship’s position north or south. But the only way of knowing your position on the spinning earth, east or west, is to know what time it is, within seconds, at the Royal Observatory at Greenwich, England—0° longitude. Sailors needed a seagoing clock! Clocks in the 1700’s were slow or fast by several minutes a week. Not good enough. And they measured seconds with a pendulum, which wouldn’t work on a rocking, rolling ship. John Harrison was a fine carpenter who became fascinated by accurate timekeeping. He built big clocks for houses, barns and churches. Bit by bit he made them more accurate. He set out to win the longitude prize. He invented ways for a clock to compensate for temperature, so they wouldn’t run slower when it got warmer. He invented a nearly frictionless escapement (the mechanism that “counts” the tick-tocks with the clock’s hands). He overcame the pendulum problem with pivoted “dumbells” that rocked back and forth with springs. Harrison worked for five years to construct the large and beautiful Sea Clock #1. In 1736 Harrison and his clock took a trip on HMS Centurion to Lisbon, Portugal, and back. Harrison was terribly seasick. His clock was not. It was a great success. But the Royal Navy wouldn’t award the prize. It dithered for the next 37 years. Harrison worked on, making his sea clocks smaller and more accurate. In 1761 he sent his son William on a trial run with Sea Watch #1 to Jamaica and back. The smaller clock worked beautifully. The Navy kept dithering. Not until Harrison was 80 years old was part of the prize awarded to him. He died three years later but he knew that he had changed the world, solving one of our most important, most perplexing problems: where are we?
An important part of Jan Adkins' considerable output is books of non-fiction for young people, his special audience. He also writes humor and feature articles for several magazines. He has illustrated most of his books and contributes illustrations to dozens of mainstream magazines, especially on marine and technical subjects. Have a look at his Wooden Ship: The Building of a Wooden Sailing Vessel in 1870, a chronicle of a fictional whale ship describing and illustrating the details of her building from design to launching.
Jan Adkins is a member of iNK's Authors on Call and is available for classroom programs through Field Trip Zoom, a terrific technology that requires only a computer, wifi, and a webcam. Click here to find out more.
MLA 8 Citation
Adkins, Jan. "Tick Tock: A Carpenter Solves an Ocean Riddle." Nonfiction Minute, iNK Think Tank, 19 Mar. 2018, www.nonfictionminute.org/ the-nonfiction-minute/Tick-Tock-A-Carpenter-Solves-an-Ocean-Riddle.
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Russian pilot Marina Raskova was famous for her long-distance flying records. In WW II, she gathered the Soviet Army’s first female pilots into the 588th Women’s Night Bombardment Regiment. They wore hand-me-down pilots’ uniforms and, even worse, they had to cut their long hair to a regulation two inches. Major Raskova worried about her girls. “Don’t you know the Germans will shoot at you?” she asked her new regiment. A woman yelled from the back, “Not if we shoot them first, Major Raskova!” They flew Polikarpov U-2’s, fabric-covered wood and wire biplanes. The only way they could carry a load of six 50 pound bombs was to leave the weight of their parachutes behind. They attacked in threes, cutting their engines and gliding down over German camps before dropping the bombs, only restarting their engines to head for home. The sleepless ground soldiers were especially upset when they learned that they were being bombed by women! The gliding whoosh just before the bombs reminded Germans of broom-sweeping, so they called them Nachthexen, “night witches.” A German captain said, “We simply couldn't grasp that the Soviet airmen that caused us the greatest trouble were in fact women. These women feared nothing. They … wouldn't give us any sleep at all.” The Luftwaffe was ordered to shoot the Night Witches down. Not easily done. The PoU2s flew slower than German fighters could fly without crashing. The cloth-and-wood biplanes didn’t appear clearly on radar, and they could maneuver more quickly than fast fighters. Ground troops surrounded their camps with searchlights and antiaircraft cannon but the Witches outwitted them. Two PoU2s roared in under power to attract the searchlights and cannon, then separated, turning and jinking to escape, while the third biplane glided in quietly— bombs away! The Witches would join up and switch places until all three Witches had dropped their loads. They were persistent witches: they sometimes flew 18 missions every night. Twenty-three of the brave women of the 588th received the USSR’s highest medal: Hero of the Soviet Union. A more tender award of flowers was given to them by admiring Free French pilots who flew from their airfields. The French pilots said: Even if it were possible to gather and place at your feet all the flowers on earth, this would not constitute sufficient tribute to your valour Jan Adkins is a superb storyteller as well as a talented illustrator and he is now available for classroom visits throughout the country. He is a member of INK's Authors on Call which uses Field Trip Zoom, a technology that requires only a computer, wifi, a webcam, and a roomful of enthusiastic children. Click here to find out more. MLA 8 Citation
Adkins, Jan. "The Night Witches: Dangerous Women." Nonfiction Minute, iNK Think Tank, 24 May 2018, www.nonfictionminute.org/the-nonfiction-minute/ The-Night-Witches-Dangerous-Women. She was 15 pounds below minimum weight for the Navy when she joined, but she had a mighty mind. Admiral Grace Hopper changed the Navy. And your world. She graduated from Vassar College in math and physics then took a doctorate from Yale in math. She joined the Navy in World War II because it needed mathematicians to build the massive machines that computed tables of distance, gun elevation, projectile weight, windage and other factors for precise naval gunnery. Almost immediately she saw something other mathematicians didn’t see: computers could talk. They weren’t just number crunchers to Grace. They could do much, much more if they were given a simple language that would bring the advantages of gigantic computing power and enormous data storage to common uses. While working on the early computers she developed a “compiler,” a kind of translating machine that turned plain-language needs into a set of mathematical commands that retrieved number data from storage banks, performed thousands or millions of math operations, and provided real-world answers. In 1959 she was crucial in devising the first broad-based computer language, COBOL (COmmon Business Oriented Language). It is the root of the many computer operating systems we use today. Then-Captain Grace worked with the National Bureau of Standards to develop self-testing capabilities so a computer could “de-bug” itself. She coined this word when she extracted a fried moth disrupting one of her computers. She led the Navy away from a few giant computers to interconnected, smaller, scattered computers, opening the door to the internet. You are reading plain language words from my small computer on your web-connected small computer. Thank you, Grace. In 1985, at 79, she was promoted to rear admiral of the United States Navy Reserve. She said, “The most important thing I've accomplished, other than building the compiler, is training young people. They come to me, you know, and say, 'Do you think we can do this?' I say, ‘Try it.’ And I back 'em up. They need that. I keep track of them as they get older and I stir 'em up at intervals so they don't forget to take chances.” She died in 1992 at 85. Admiral Grace Hopper received many awards and decorations but the Navy’s most sincere tribute came in 1996 when it named the guided missile cruiser DDG-70, USS Hopper. Naturally, its sailors call their ship “Amazing Grace.” Jan Adkins successfully tackles the art and science of 10,000 years of bridge building and imparts a lot of historical drama along the way. The process is given fascinating life in this accessible study, wonderfully illustrated by Jan Adkins himself. Ranging from ancient Rome to the present day, from simple log bridges to marvels of industrial technology, and from well-known landmarks to little-known feats of engineering and art, this book gives readers a new appreciation for that most familiar of structures, the bridge. Jan Adkins is a member of iNK's Authors on Call and is available for classroom programs through Field Trip Zoom, a terrific technology that requires only a computer, wifi, and a webcam. Click here to find out more. MLA 8 Citation
Adkins, Jan. "Amazing Grace." Nonfiction Minute, iNK Think Tank, 25 Jan. 2018, www.nonfictionminute.org/the-nonfiction-minute/amazing-grace.
September 1, 1852, British astronomer Richard Carrington was sketching the pattern of sunspots being projected from his telescope onto a white panel. Suddenly, a rare white-light solar flare outshone the rest of the image. Trouble was on its way! The revolving molten core of our Earth generates a magnetic field – the magnetosphere – that not only orients our compasses but protects us from the sun’s lethal radiation. Intense charged particles from the sun are magnetically bent around the earth. Some follow magnetic lines into the poles and light up the arctic and antarctic skies as aurorae. Periodically, during times of intense surface disturbance, giant flares of energy can burst out of the sun: CMEs, coronal mass ejections. They’re directional and they seldom hit earth. When they do, the most powerful can punch through our magnetosphere. On September 2, 1852, Carrington’s flare energy reached the earth and danced along the copper wires of our (then) new telegraph system. Hundreds of miles of wire burst into flames. Telegraph offices burned down, operators at their keys were knocked back by severe shocks, instruments and switches melted. For two days the telegraph system that wasn’t destroyed sent nonsense. Then spectacular aurorae that lit up the skies, they, finally, proved that the sun’s energy was the aurora’s source. Aurorae were seen all over the world, even near the equator. After two days the effects ceased. Could it happen again? It has. In 1882, a flare melted telegraph equipment in Chicago. In 1902, solar energy disrupted the Atlantic telegraph cable and shut down Swiss electric trollies. In 1940, hundreds of miles of American telegraph and telephone lines were destroyed. A solar flare in 1989 almost forced the Space Shuttle Discovery to return to earth early and knocked out Quebec’s electricity; only quick action in New Jersey, where a major transformer melted, saved the United States’ east coast from a long blackout. In 2003, a powerful flare destroyed or disabled many satellites, damaged instruments on our Mars orbiter, and sent the crew of the International Space Station into its flare-shielded module. In 2005, our GPS navigation satellite constellation was knocked out for 10 minutes. All the life and energy we have comes from the sun. But that energy, itself, is dangerous. We’re partially protected by our magnetosphere. Hope for the best and reach for the sunscreen. Adkins new book is about the first drive in an automobile. The wife of the inventor took her kids to see their grandparents. Henry VIII gets a lot of bad press notably for his seven wives and a regrettable habit of chopping off heads. But there were two Henrys: early and late. Early Henry was a humdinger. He became king at age 17 in 1509, a big (over six feet) handsome lad. He was broadly educated and well-read in English, Latin, and French. He played the lute, organ, and harpsichord, composed music, and sang well. He loved a party, and he was a ferocious sportsman. Henry played excellent tennis, was a skilled wrestler, hunter, and jouster. His love of jousting may have been his undoing. This was not a battle skill but a royal game: on huge horses, in heavy armor, opponents rode at each other with blunt lances to knock each other out of the saddle. But in 1536 Henry left his face-covering visor up during a joust, catching a lance on his forehead. His majesty went down under his horse. His legs were crushed and he lay unconscious for two hours, apparently a serious concussion. Henry changed radically. The broken long bones in his legs healed poorly and developed infected ulcers, which had to be drained using red hot probes. Ouch. Walking became difficult and painful, and finally impossible. The smell from his infected legs was awful. He became angry, paranoid, and irrational. No longer active, he ate and ate, bloating from around 210 pounds (95 kg) to 400 pounds (181 kg). This was late Henry: obese, dangerous, and smelly. His altered mental state and his constant pain surely contributed to his marital difficulties and to steady employment for head-choppers. A mental, physical wreck, Henry VIII died at age 55 in 1547. Court embalmers replaced his innards with sawdust, resin and herbs to preserve the body, but Henry was already rotting from the legs up. The royal corpse was placed in a sealed lead coffin. An enormous regal procession set off from Whitehall Castle to Windsor Castle. The funeral parade halted the first day at the old Syon Abbey. In the middle of the night, the lead coffin exploded! Or did it? Some historians suggest that it simply broke because Henry was too fat and the roads were bad. Yet contemporary morticians insist that gasses of decomposition can blow open even a modern sealed coffin. The coffin was soldered shut and the parade hustled on to the burial at Windsor, an untidy end for a wonderful and terrible king.
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