NASA helps teachers prepare students who will be the engineers, scientists, astronauts and other NASA workers of the future. The information you provide on a NASA Web site will be used only for its intended purpose. For more information on money and wealth, see the links on the next page. That’s why dive watches are designed not only to withstand the extraordinary stresses of the underwater environment, but also to dependably provide critical, potentially life-saving information to divers and to be as easy as possible to use underwater. Why Should We Build Space Stations? So why has it taken so long for new spacesuits to be built? One popular choice is stainless steel, an alloy whose coating makes it resistant to being deformed by water and succumbing to pressure as well as corrosion. More importantly, the watch’s stainless steel case and extra-tough mineral crystal were designed to resist water pressure and remain watertight 1,968 feet (600 meters) below the surface, far deeper than even the most accomplished and daring scuba expert would dare venture. European Stainless Steel Association. Others are made from high-tech ceramic composites — the cutting edge of pressure resistance — instead of steel or titanium. Cerny, Rudolph J. “Wrist Pressure Gauge.” U.S.

Ultimately, in 1937, the Swiss Laboratory for Horology certified the watch as able to withstand pressure 13.5 times what it experienced on the surface. What is Internet Time, and can I buy a watch that tells it? Can you dive 700 feet in one breath? Can a dive watch save your life? Some dive watches include multiple gauges that measure elapsed time on the bottom, and have alarms that flash or vibrate so you can sense them even when water muffles sound. Ruchonnet, Jean-Francois. “Depth Measuring Device for Watches and Watches Incorporating Such a Measuring Device.” U.S. But I also remember that my cousin, who was serving in the U.S. Whether you’re a scuba diver or a free diver who depends on lung capacity, “no diver should enter the water without a reliable timekeeping device,” scuba-diving experts and physicians Michael B. Strauss and Igor V. Aksenov write in their 2004 manual “Diving Science: Essential Physiology and Medicine for Divers.” For breath-hold diving, monitoring both your time underwater and the amount of time that you’re resting on the surface between dives is critical because it enables you to keep within the precise parameters your body can handle.

But for both recreational scuba and free divers and ordinary landlubbers who simply enjoy wearing a precision-crafted, elegantly-designed piece of machinery, a diving watch is still de rigueur as an accessory. Newman, John. “Scuba Diving and Snorkeling for Dummies.” Wiley. What if my scuba diving equipment failed? Navy at the time, took up scuba for fun, and came home on leave and showed me the oxygen tank, fins, mask and other gear that he used for his hobby. If you’ve ever seen any of those classic 1970s TV documentaries about underwater adventurer Jacques Cousteau, the father of modern scuba diving, you may have noticed that when he descended into the depths to explore shipwrecks, he didn’t just wear some run-of-the-mill watch from the jewelry store bargain bin. The watch also must have a luminous tip on the second hand, so that it can be seen even in the dark ocean depths, and continue to function when exposed to salt water and to the presence of a magnetic field. Cousteau’s watch had super-luminous hour markers and hands set against a dark dial face, which insured that he could make out the time even in low light underwater. How do dogs perceive time?

The Apollo program was the name of NASA’s project to land humans on the moon in the 1960s and early 1970s. With the success of Apollo 11 in 1969, which put astronauts on the lunar surface for the first time in history, the U.S. By 1953 the growing demands of early space research meant there were openings for African-American computers at Langley Research Center’s Guidance and Navigation Department – and Katherine Johnson found the perfect place to put her extraordinary mathematical skills to work. You have to do some market research to determine how well a new bank will do in a particular area, or where the best spot in a large geographic region might be. If it’s not kneaded, it will likely turn out to be flat. “Jupiter is talking to us in a way only gas-giant worlds can,” said Bill Kurth, co-investigator for the Waves instrument aboard Juno that uses radio waves to peer below Jupiter’s clouds and figure out what’s going on beneath them.