Only if the skydiver is in free fall at 750 feet will the CYPRES unit cut the reserve loop. The skydiver turns on the CYPRES on the ground. The CYPRES computer takes a measurement of air pressure on the ground and uses this to determine the skydiver's altitude throughout the day. Whe...
But it's not just the lungs you have to worry about during extended periods of reverse suspension. Our bodies are well set up to move blood around when we're standing upright, and our blood vessels are customized to make sure blood doesn't pool up in our feet. But that system is a ...
per-step number is to update your step counter or pedometer. Most pedometers (like the Fitbit) allow you to personalize your device. This is important because whenever you cover that distance on a walk or run, then the device will give you an exact measurement of the miles that you ...
Medical devices are divided into different classes: class I, less critical (low risk) devices, most of the non-active or non-invasive ones that can either be sterile or perform a measurement function; class II, medium risk active or non-active devices, either invasive or non-invasive, that...
On Aug. 15, 1930 in Santa Ana, CA, Dr. Albert A. Michelson stood alongside the mile-long vacuum tube which would be used in his last and most accurate measurement of the speed of light.(Image credit: Getty/Bettman) Another scientist who tackled the speed of light mystery was Poland-...
Whilepush-upsare a limited measurement of your overall fitness, they do provide a good understanding of your upper-bodymuscular endurance. So, if you're wondering, "how many push-ups should I be able to do?" take a look at what the average number of push-ups are for men and women by...
Anne runs 6 laps on a track. She runs a total of 1 mile, or 5,280 feet. What is the distance, in feet, that she runs in each lap? Is a kilometer bigger than a mile? Which is longer 5 miles or 10 kilometers? What unit of measurement comes after kilometers?
Deconstructing the Measurement of a Meter Before you start measuring, take a moment to be sure you understand the relationship between units of measure in the metric system. The base unit of measure for length is the meter, which is roughly equal to 3.28 feet. (For quick estimates in your ...
Radio waves travel at the speed of light,roughly 1,000 feet per microsecond; so if the radar set has a good high-speed clock, it can get an accurate distance measurement of the airplane. Using special signal processing equipment, the radar set can also measure the Doppler effect very accur...
One of these rooms can be as big as 2,250 square feet. That's as large as a four-bedroom house. Whatever you need -- whether it's an Xbox or a bottle of bubbly -- these are the accommodations where you'll get it fast. After a good night's sleep, you would probably head to ...