They rarely interact with ordinary matter, but massive experiments have been set up to
detect the flashes of light produced when they do.
People can
detect flashes of light as feeble as a single photon, an experiment has demonstrated — a finding that seems to conclude a 70 - year quest to test the limits of human vision.
They can't be observed directly from Earth because they are blocked by the atmosphere, but Cherenkov telescopes spot them by
detecting the flash of light caused by their collision with atoms in the upper atmosphere.
Not exact matches
Lots
of baby monitors have a
light display on the parent unit that
flashes when sound is
detected.
The Venus Express spacecraft, which orbited Venus from 2006 until earlier this year,
detected flashes of infrared
light coming from the planet's surface.
NOT MORDOR
Flashes of infrared
light detected by the Venus Express spacecraft could be signs
of active volcanoes (illustrated) on Venus.
It is no good having a technology that tells you that a neuron has fired by giving off a
flash of light, if you can not
detect that
light.
Even a modest telescope can
detect millions
of stars, which means it could also pick up any
flashes of light that outshine those stars.
With their long strings
of light -
detecting devices, lowered into deep water or ice to wait for the telltale
flashes that signal a neutrino, none
of them looks remotely like a conventional telescope.
«The eye can actually
detect single photons, but the signals that
light sends to the brain are suppressed unless there are about seven — otherwise you would see
flashes of light all the time — even in complete darkness,» explains quantum physicist Seth Lloyd
of the Massachusetts Institute
of Technology.
If she has her way, in a few years many
of them will be retrofitted with about $ 5,000 worth
of light sensors and electronics designed to
detect minute
flashes of light, like the Auger tanks.
Like existing ground - based gamma - ray observatories, the telescopes wouldn't
detect gamma rays directly but would instead pick up the
flashes of light given off when gamma radiation interacts with atoms in the upper atmosphere.
When a low - energy neutrino or antineutrino from a supernova collides with a water molecule in the tank, the resulting
light signal is recorded by about 100
of 13,000 photomultipliers, ultrasensitive
light -
detecting devices that turn a tiny
flash of light into a larger recordable burst
of electricity.
When a collision happens, a xenon atom will recoil and emit a tiny
flash of light, which is
detected by LUX's
light sensors.
When neutrinos interact with electrons or nuclei
of those water or oil molecules, they give off a
flash of light that sensors can
detect.
«Once these elements had been extracted, intense
flashes of light were
detected in the image sequences.
The modeling showed that basketball - sized eyes could
detect whales amid
flashes of light from more than 120 meters away — giving the squid enough
of an edge to make a quick exit.
The
flash of light from lightning within clouds is hard to
detect and most monitoring stations are located on land.
During its mission, the robotic spacecraft
detected flashes of infrared
light coming from the planet's surface.
Flashes of infrared
light detected by the Venus Express spacecraft could be signs
of active volcanoes (illustrated) on Venus.
About two seconds after the gravitational waves ended, a bright
flash of light, in the form
of gamma rays, was
detected by NASA's Fermi space telescope.
The standard Audi Pre-Sense system can warn the driver, tension the seatbelts and close the windows if a potential collision is
detected, while Pre-Sense Rear
flashes the brake
lights as a warning to rearward traffic if you're in danger
of being rear - ended.
Works like a charm and together with rear radar and surrounding sodar you have a car that can
detect obstacles, read signs, see the road, partly drive by itself, keep cruise control distance, warn rear driver if they don't see you are at standstill in a queue (the car then
flashes the
lights to wake them up) and to protect you (if they still doesn't react and my car thinks this will not end well, it pretensions seat belts, apply full brake if you are at stand still, to prevent you from bouncing further, and precharge the airbag safety system - if nothing happens, it releases the belts and so on), and it can find parking spot that fits and help you park there and
of course help you with obstacles around the car when parking by yourself.
If the
light illuminates without ever
flashing, then the TPMS has
detected that one
of your tires is not inflated to the proper pressure.