Urbanization and climate change are contributing to severe flooding globally, damaging infrastructure, disrupting economies, and undermining human well-being. Approaches to make cities more resilient to floods are emerging, notably with the design of flood-resilient structures, but relatively little is kno...
“Earth’s gravity should hold onto the oxygen, and yet, we see this gas shooting off into space. We’re trying to figure out how that works.”Moen adds:“That is a science question that has been hanging around for four decades.”Cusp aurora...
Regarding a crewmember ejecting from a plane, M equals his or her body mass plus the mass of the seat. A is equal to the acceleration created by the catapult and the underseat rocket. Acceleration is measured in terms of G, or gravity forces. Ejecting from an aircraft is in the 5-G...
Also, microgravity does some interesting things to fire. When you strike a match here on Earth, gravity pulls cool, dense air downwards as hot gasses rise up — resulting in a teardrop-shaped flame. But on the ISS, flames take the form of tiny bluish spheres. These have already revolution...
Space toilets use suction instead of gravity, for both urine and solid waste. You don't really sit in space, because you don't weight anything, so astronauts need to either strap themselves in or use handles to hold themselves down. You can actually check out a guided tour of the toilet...
Flapping wings produce lift and thrust in bio-inspired aerial robots, leading to quiet, safe and efficient flight. However, to extend their application scope, these robots must perch and land, a feat widely demonstrated by birds. Despite recent progress,
Example:“If a person raised in a zero-gravity environment moved to Earth, they would struggle with muscle control.” Example:“Ancient cave paintings found near rivers suggest that early humans might have relied heavily on fishing.” 6. Empirical Hypothesis An empirical hypothesis, also called a...
(2015) by Petra R. Rivera-Rideau via Zoom. "You could just book someone and call it a day. But I want to understand the music and its background. Also, going to shows and hanging out after with the artist or manager has helped me understand what it's like to live th...
Newer flight attendants have to fly reserve, rarely knowing where they will be headed the next day. They are at the mercy of the crew-schedulers -- the airline employees who figure out who needs to be where on a day-to-day basis. After a year, or in some cases many years, ...
It's on the underside of the frame, helping to keep the center of gravity low. The gas tank is the only notably heavy component mounted high up, between the handlebars and the seat. The design, then, focuses a lot on weight distribution. With most of the heavy parts mounted at or ...