On May 3, 2007, team of astronomers (including Jean - Luc Margot; Stan Peale; Igor V. Holin; Raymond F. Jurgens; and Martin A. Slade) announced new evidence that Mercury has a partially molten core using new observations of fluctuations in Mercury's spin obtained
with radar signals bounced off the planet from Earth (with the 305 - meter Arecibo, the 34 - meter Goldstone, and the 100 - meter Robert C. Byrd Green Bank radio telescopes).
Not exact matches
Radar began
with the observation that lightning gives off a radio
signal, and Scottish engineer Robert Watson - Watt, working as a meteorologist, thought he could exploit this phenomenon to warn pilots of approaching storms.
Shapiro calculated that the sun's gravity well should delay the
radar signal by about 200 microseconds, compared
with its time back from Mercury without the sun nearby.
Radar satellites come equipped
with an antenna that sends radio waves to Earth; after hitting the planet's surface, the
signal is reflected and scattered back toward a detector that generates an image without the need for visible light.
You think of things like thermal imaging and pupil dilation, and you can look at heart rate
with ultrawideband
radar, and blood pressure and breathing rate and galvanic skin response —
signals like sweat — and you can look at the constellation of all of these things, and they may tell you that the person is aroused or that he's having an autonomic response.
Such radio traffic could be readily apparent On the earth, for example, a new
radar system employed
with the telescope at the Arecibo Observatory for planetary studies emits a narrow - bandwidth
signal that, if it were detected from another star, would be between a million and 10 billion times brighter than the sun at the same frequency.
«To better compare the GPR
signal against the measured root values from the soil cores,
radar profiles were sectioned
with the most
signal concentrated on the upper soil layer for further analysis,» Dong said.
Connecting channels (
with shapes suggesting that they were carved by a liquid) lead in and out of black patches that essentially reflect no
radar signal and so must be extremely smooth like a liquid surface.
Leaders of the Detroit Three automakers will meet Tuesday
with President Donald Trump, another
signal his administration will swiftly carry out key campaign promises and continue to keep the industry prominently on his
radar.
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with Overdrive, 12 Speakers, 3rd row seats: split - bench, ABS brakes, Active Cruise Control, Alloy wheels, Automatic High Beams, Blind Spot Sensor, Brake assist, Distance - Pacing Cruise Control, Electronic Stability Control, Emergency communication system, Exterior Parking Camera Rear, Front dual zone A / C, Front fog lights, Heated door mirrors, Heated front seats, Heated Perforated Leather 2nd Row Captain Chairs, Heated rear seats, Heated Steering Wheel, Heated / Ventilated Front Bucket Seats, Illuminated entry, Lane Departure Alert, Limited Platinum Package, Low tire pressure warning, Memory seat, MP3 decoder, Navigation System, Outside temperature display, Panoramic Moonroof, Power Liftgate, Power moonroof, Pre-Collision System w / Dynamic
Radar Cruise Ctrl, Radio: Entune Premium JBL Audio w / Nav & App Suite, Rear air conditioning, Rear Parking Sensors, Remote keyless entry, Safety Connect, Steering wheel mounted audio controls, Tachometer, Telescoping steering wheel, Traction control, Turn
signal indicator mirrors.
The range - topping model also adopts a wireless smartphone charger and revised rear - seat entertainment system, four - camera panoramic video array, and additional electronic driver aids including a pre-collision system, dynamic
radar cruise control, lane - departure alert and blind - spot monitor
with rear cross-traffic alert (in addition to the existing 10 airbags, traction and stability control, multi-terrain anti-lock brakes, hill - start assist, hill - descent control, trailer - sway control and emergency brake
signal).
The system, which relies on the
signals from the two front
radar sensors and the camera, interacts
with the S tronic and the tiptronic to cover the full range of speeds from 0 to 250 km / h (155 mph); in manual transmissions, it starts at 30 km / h (19 mph).
Has to have been using the
radar with «audio Doppler engaged» — that is, a backup audible
signal connected to the
radar's Doppler shift, AND