The other type of scanner uses a competing technology known asmillimeter wave(mmw)imaging. These machines work on the same principles, except they emit a special type of microwave, not X-ray. Two rotating transmitters produce the waves as a passenger stands still inside the machine. The energy...
How Space Shuttles Work How Telescopes Work How Hubble Space Telescope Works More Great Links Wilkinson Microwave Anisotropy Probe WMAP Mission: Results Sources "A hole lot of nothing found by astronomers." Associated Press. CNN.com. Aug. 24, 2007. http://www.cnn.com/2007/TECH/space/08/24/...
(I consider this a physics question because understanding the answer to this real-world application will help correct whatever theoretical misconceptions I have about RF, antennas, and radio telescopes) Thanks! In the microwave band here are multi-element detectors, but at longer wavelengths the tele...
While creating any accurate map of matter distribution across the cosmos is an impressive feat, it is particularly extraordinary for dark matter, which does not interact with light and thus cannot be seen directly with telescopes or other instruments. So, if dark matter is effectively "invisible,...
One example of the cosmological principle at work is the cosmic microwave background (CMB), radiation that is a remnant of the early stages of the universe after the Big Bang. Using instruments such as NASA's Wilkinson Microwave Anisotropy Probe, astronomers have found the CMB is virtually iden...
In "The Core," scientists discover that the Earth's inner core has stopped rotating. This disrupts the Earth's magnetic field leaving the Earth vulnerable to deadly microwave radiation (Bad science alert: the Sun does not put out enough energy in the microwave band to be a danger and the ...
Did Russia Steal America’s Hypersonic Secrets? Is China Winning the Aircraft Carrier Race? This Magic Mushroom is a Groundbreaking Mutant A Hypersonic Jet in China Reached Mach 6.5 America Wants a Scaled-Up, Anti-Missile Iron Dome NJ Drone Sightings May Have Created a New Area 51...
Dr. Parkin also added that within this same amount of time, improvements in filters and detectors will allow for arrays of meter-class telescopes that can work together to receive signals from the spacecraft. However, such a communications system also comes with its share of drawbacks, one of...
(far right, in purple and blue) that created the universe's earliest structure. This aligns with what we know about the ancient universe from the afterglow of the Big Bang, called the Cosmic Microwave Background (far right in yellow and green). The researchers achieved their results by ...
These machines work on the same principles, except they emit a special type of microwave, not X-ray. Two rotating transmitters produce the waves as a passenger stands still inside the machine. The energy passes through clothing, bounces off the person's skin -- as well as any potential ...