first ever photograph of light as both a particle and wave
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8/9/2019 First Ever Photograph of Light as Both a Particle and Wave
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4/3/2015 First ever photograph of light as both a particle and wave
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First ever photograph of light as both a particle and wave
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Mon, 03/02/2015 - 8:34am
by EPFL
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Light behaves both as a particle and as a wave. Since the days of Einstein, scientists have been
trying to directly observe both of these aspects of light at the same time. Now, scientists at EPFL
have succeeded in capturing the first-ever snapshot of this dual behavior.
Quantum mechanics tells us that light can behave simultaneously as a particle or a wave.
However, there has never been an experiment able to capture both natures of light at the same
time; the closest we have come is seeing either wave or particle, but always at different times.
Taking a radically different experimental approach, EPFL scientists have now been able to take the
first ever snapshot of light behaving both as a wave and as a particle. The breakthrough work is
published in Nature C ommunications.
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When UV light hits a metal surface, it causes an emission of electrons. Albert Einstein explained
this "photoelectric" effect by proposing that light—thought to only be a wave—is also a stream of
particles. Even though a variety of experiments have successfully observed both the particle- and
wave-like behaviors of light, they have never been able to observe both at the same time.
A research team led by Fabrizio Carbone at EPFL has now carried out an experiment with a clever
twist: using electrons to image light. The researchers have captured, for the first time ever, a
single snapshot of light behaving simultaneously as both a wave and a stream of particles particle.
The experiment is set up like this: A pulse of laser light is fired at a tiny metallic nanowire. The
laser adds energy to the charged particles in the nanowire, causing them to vibrate. Light travels
along this tiny wire in two possible directions, like cars on a highway. When waves traveling in
opposite directions meet each other they form a new wave that looks like it is standing in place.
Here, this standing wave becomes the source of light for the experiment, radiating around the
nanowire.
This is where the experiment's trick comes in: The scientists shot a stream of electrons close to
the nanowire, using them to image the standing wave of light. As the electrons interacted with the
confined light on the nanowire, they either sped up or slowed down. Using the ultrafast
microscope to image the position where this change in speed occurred, Carbone's team could now
visualize the standing wave, which acts as a fingerprint of the wave-nature of light.
While this phenomenon shows the wave-like nature of light, it simultaneously demonstrated its
particle aspect as well. As the electrons pass close to the standing wave of light, they "hit" the
light's particles, the photons. As mentioned above, this affects their speed, making them move
faster or slower. This change in speed appears as an exchange of energy "packets" (quanta)
between electrons and photons. The very occurrence of these energy packets shows that the light
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4/3/2015 First ever photograph of light as both a particle and wave
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on the nanowire behaves as a particle.
"This experiment demonstrates that, for the first time ever, we can film quantum mechanics—and
its paradoxical nature—directly," says Fabrizio Carbone. In addition, the importance of this
pioneering work can extend beyond fundamental science and to future technologies. As Carbone
explains: "Being able to image and control quantum phenomena at the nanometer scale like this
opens up a new route towards quantum computing."
Source: EPFL
TOPICS R & D DAILY PHY SICS STRANGE BUT T RUE
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COMMENTS
3 Comments 1
• •
Ettore Greco •
Could this be Christmas day for Wavevolution?
We know now, that waves and particles are one and the same thing. They behave in the
same way. There are no two separate mechanisms to move all energy in regard to mass and
massless like Einstein believed but only One Movement in a Universe made of broken
symmetries. We also know now that we are Human waves. All this come with far reaching
revelations. Will this discovery change the minds of those Muslims, Christians and Jews that
are now at war? Will they ever know about this newly found Equality that has its origin from
One undifferentiated energy? Will they know about One God, author of this Movement or Single Will since 14 billion years ago?
With the discovery of Wavevolution Science and Religion are One and the Same.
http://www.wavevolution.org/en...
.
American Cannibal •
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4/3/2015 First ever photograph of light as both a particle and wave
http://www.rdmag.com/videos/2015/03/first-ever-photograph-light-both-particle-and-wave
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R&D MAGAZINE
• •
• •
Reputation Saviors •
The claims Einstein theorized the Photoelectric Effect in 1905 is FALSE. Nikola Tesla
Patented his 1901, Radiant Energy Receiver, describes a photo electric effect, but
also debunks Einstein's E=MC2. Tesla describes the photoelectric effect in a way that
is consistent with Nikola Tesla's statement "all energy in matter comes from it'senvironment". If E=M, than surely Einstein could live forever, however, all energy in
matter comes from it's environment. Continuing from Tesla's 1901 Patent for
Apparatus for the Utilization of Radiant Energy, Tesla states his theory: "My own
experiments and observations, however, lead me to conclusions more in accord with
the theory heretofore advanced by me that sources of such radiant energy throw off
with great velocity minute particles of matter which are strongly electrified, and
therefore capable of charging an electrical conductor, even if not so, may at any rate
discharge an electrified conductor either by carrying off bodily its charge or
otherwise.” “In applying my discovery I provide a condenser, preferably of considerable electrostatic capacity, and connect one of its terminals to an insulated
metal plate or other conducting body exposed to the rays or streams of radiant
matter.” In Nikola Tesla's 1899 Colorado Springs Notes, Tesla used highly polished,
large surface area, insulated plates "the plates act as a condenser", elevated tin foiled,
copper and brass sphere's, for many reasons, presumably to absorb and emit or send
and receive UV, even at night. Nikola Tesla's "Apparatus for the Utilization of Radiant
Energy" U.S. Patents 685,953-8 November 5 1901 & "Apparatus for the Transmission
of Electrical Energy" U.S. Patent # 1,119,732 January 18 1902
http://nikolateslasolar.blogsp...
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4/3/2015 First ever photograph of light as both a particle and wave
http://www.rdmag.com/videos/2015/03/first-ever-photograph-light-both-particle-and-wave
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