Tập
Modern Marvels: Episode 41
Tóm tắt
From chariot wheels of ancient Egypt to hard disks in a computer to the wheels on a Mars rover, machinery can’t function without lubricants. And in today’s technology, there are a mind-boggling number of friction points that must be lubed, and a staggering number of lubricants– petroleum motor oils that keep car engines from burning up, synthetic greases that stay put in the zero gravity of space, and solid coatings that prevent eggs from sticking to a pan. We’ll see how this marvel of chemistry works and how it’s used. Peering into the future, we’ll behold a power generator that employs air as a lubricant, trains using magnetic levitation, which eliminates any need for lubrication, and bio-engineered vegetable oils that promise to take humanity back to one of its very first lubricants. From helping medieval windmills spin, to allowing robotic arms on planetary rovers to move, lubricants are crucial to the advance of technology and literally keep the wheels of progress turning.
Chi tiết
- Phim bộ
- Modern Marvels
- Mùa
- Mùa 12
- Tập
- Tập 41
- Ngày phát sóng
- 2005-08-10
- Thời lượng
- 44 min
Thông tin tập
Episode 41 là tập 41 trong Season 12 của Modern Marvels. Tập này phát sóng ngày 2005-08-10. Thời lượng là 44 min.
Tập trước / tập sau
Tập 40
They dig, scoop, suck, and spew an ocean of silt and sediment. Dredgers are the mechanical beasts that fuel the world's economic engine by clearing and deepening ports for mega-container ships. The roots of dredging go back as far as the Egyptians, who used their hands to open channels on the Nile to keep crops watered. The Romans, who used harbor dredging to keep a tight fist on Europe, pioneered the "spoon and bag" dredge to speed up the process. Steam power brought about the first large-scale dredges and helped create the Panama Canal. We'll go aboard two of the largest US dredgers and see how they keep waters moving. And in Holland, we meet the biggest players on the dredging world and witness the launching of the largest dredge ever built. From there, we head to Dubai in the Middle East, where 90 square miles of new islands was dredged from the sea and will now create a pleasure world for the rich and powerful.
Tập 42
German military aircraft designs were decades ahead of their Allied counterparts. To insure the Luftwaffe’s air superiority, Germany’s cutting edge designers conceived and tested highly advanced concepts including swept-wing and vertical take-off aircraft, and long range stealth bombers. Their innovations influenced the world’s military and civilian aircraft designs for much of the post war period. Had Hitler’s forces held on for another few years, the Luftwaffe’s airborne arsenal would have changed the war’s outcome. Using archival footage and computer-generated images, this program traces the development of high production jet fighters, dive bombers, swept-wing fighters, and vertical take-off planes. The centerpiece of the Luftwaffe’s plans, the horton 18 long range jet bomber, was destined to drop a nuclear bomb on the U.S. So advanced was the Horton 18′s design, it became a model for the American stealth bomber fleet of the 1980′s.
Các tập khác trong mùa này
Tập 39
An enormous hydraulic machine press that stamps out a pickup truck's doors in seconds... Rock crushers that pulverize 8000 tons of solid granite per hour... Giant "chain trenchers" that dig a 35-foot ditch out of solid rock... A harvesting combine that cuts, threshes and offloads 3.3 bushels of grain-- per second... and the world's largest optical telescope, the magnificent Keck Observatory, which gazes out into the ends of the universe from nearly 14,000 feet atop the island of Hawaii. Sometimes you've gotta think big.
Tập 43
Perhaps no field has experienced the revolution in velocity more acutely than transportation. We look at five blazingly fast technological marvels that have pushed the speed limits to the very edge, each with its own unique and dramatic history: the world's fastest production car (Sweden's Koenigsegg CCR); the world's fastest train (the Maglev in Shanghai); the world's fastest boat (The Spirit of Australia); the world's fastest roller coaster (the Kingda Ka) and the fastest thing on earth (the Holloman High Speed Test Track), used to test highly sensitive equipment for many branches of the government and commercial clients.
Tập 38
When this 60 tons of high-tech military hardware rumbles onto the battlefield at nearly 40 mph, there's nowhere for the enemy to hide. Behind its impenetrable armor lies one of the most effective computerized weapons systems. Its main weapon--an awesome 120mm rifled gun that can take out a football-sized moving target three miles away. Men who serve in this metallic monster claim the hard-hitting warhorse is the world's best battle tank. An underdog during military competitions in the late 1980s, the Challenger proved itself in Operation Desert Storm and was back in action for Operation Iraqi Freedom. Unique archive film, riveting reenactments, extraordinary interviews, and dramatic computer graphics tell the story of this British battlefield heavyweight and the men who have taken it into the heat of battle.
Tập 44
In any battle, the key to victory is the ability to strike the enemy without them knowing what hit them. Within the US arsenal one such weapon can go into harm’s way, deliver 40,000 pounds of either conventional or nuclear bombs, and slip away unobserved–the B-2 Stealth Bomber. With its origins in single-wing experimentation in Germany in the 1930s, the B-2 was developed under a cloak of secrecy. But when that cloak was lifted, the world was awed by what stood before them. Able to fly over 6,000 miles without refueling, it can reach whatever target the US military wants to attack and deliver its awesome array of laser-guided weapons with pinpoint accuracy. Using state-of-the-art technology, including over 130 onboard computers, and shrouded by a mantle of stealth, it’s undetectable by any radar.
Tập 37
A simple flush and it’s forgotten. But haven’t you secretly wondered where it all goes when we go? Join us as we explore this less-than-polite topic, and examine the network of underground pipes and tunnels that carries human waste and excess storm water away. From ancient Rome’s pristine sewage-conveying systems, through the disease-spreading, out-the-window system of Europe in the Middle Ages, and into the progressive sanitation engineering of the 19th and 20th centuries, we go with the flow of sewage history. And we sift through the flotsam and jetsam of our cities’ sewer systems and delve into the sewers of Paris, Boston, and Los Angeles to study waste management’s evolution. We meet a sewer diver (and his robotic counterpart) who inspects and ensures the efficient operation of the conduits; decipher the myths about “treasures” and creatures found in the murky depths; and find out exactly where it goes, how it gets there, and how we’ve learned to use it to our benefit.
Tập 45
Tập 36
Today’s cowboy plants one boot firmly in the traditions of the Old West and the other in the world of modern technology. Beginning in the 19th century, the era in which the American cattle industry boomed, we examine cowboy technology. Learn how North American cowboys converted saddles, ropes, spurs, and other equipment originally developed by the Spanish, into tools of the trade perfectly suited for the developing cattle industry. And see how the invention of barbed wire revolutionized the cowboy’s world. Step into the 21st century with today’s cowboys who use computer chips, retinal scans, DNA evidence to round up cattle rustlers, and high-tech digital-imaging devices to aid in shoeing horses…and ride ATVs as often as their horses. In the world of rodeo, witness today’s cowboys as they utilize advanced theories of genetics and artificial insemination in an attempt to breed the perfect bucking bull.
Tập 46
We begin with electrical linemen perched precariously out a helicopter door, repairing 345,000-volt high-tension power lines. They are part of an army of technicians and scientists we'll ride, climb, and crawl with on this episode. They risk their lives so that we can have the services we take for granted–electric power and 21st century communications. They lay and maintain the wire that connects us one to another, as well as America to the rest of the world. The hardwiring of America is a story that is nearly two centuries old. And though satellites and wireless systems may be challenging the wire, it's not dead. Fiber optic cable, lines that transmit light, became a player in information delivery in the late 1970s. We may be entering a "wireless" age, but the infrastructure of wires laid by visionary scientists and industrialists are still vital to America. Wire technology will be with us, continuing to provide service, well into the next century.
Tập 35
Route 66, encompassing eight states from Illinois to California and 2,400 miles, represented an American myth–that something better lay over the rainbow. Route 66 began in the early 20th century when a confluence of technologies–automotive, steel construction, and concrete paving–merged with population explosion, westward migration, and prosperity after WWI. The federal government responded with highway bills that converted existing roadways into an interstate called Route 66. Later, WWII highlighted the need for a strategic system similar to Germany's Autobahn–wider, safer, and more advanced. As federal and state governments worked on a superhighway, millions sought "their kicks on Route 66." By 1985, the abandoned roadway no longer "officially" existed, yet, it remains a destination for nostalgic travelers wishing to recapture a simpler, more adventurous era.
Tập 47
Since time immemorial, flashes of light have startled our senses and piqued our imagination. But it’s only in recent years that we’ve begun to unlock the secrets behind this terrifying phenomenon, as we learn in this high-tech look at how man has tried to control nature throughout history. Lightning kills nearly 100 people yearly in the United States and injures hundreds of others. Meet men and women who look for new ways of detection, prevention, and how to save lives when Mother Nature strikes!