I'll go with that, and raise you one. The extension between a pupil looking, and at its reflection in a mirror, is near infinite.... one can say that the blackest thing in existence is the pupil of the eye.
Still thinking about the rest...
I'll go with that, and raise you one. The extension between a pupil looking, and at its reflection in a mirror, is near infinite.... one can say that the blackest thing in existence is the pupil of the eye.
Tell me more about your "infinite" extension. That doesn't make sense to me...seasmith wrote:I'll go with that, and raise you one. The extension between a pupil looking, and at its reflection in a mirror, is near infinite.... one can say that the blackest thing in existence is the pupil of the eye.
Still thinking about the rest...
Nothing really to do with EL, or The Future of Science; so just a quick off-topic reply here."near infinite" extension
The "not waves or particles" is readily apparent; however with the dualistic concept of "vector" you've added a Variable to the definition, right?... a vectoral phenomenon. Add the requirement of a pinhole, slit, edge, prism, or other imaging structure, and you discover the spectrum. Light is rays/vectors, not waves or particles. -Webo
I think it’s usually computed as direction x magnitude (measured as Intensity for ‘light’, but whichever. So those factors are given, for each beam.However, my "vectors" are not dualistic, unless by that you mean direction+magnitude...
In my centropic pressure field theory [CPFT] the operant elementary light vector/beam is either directed toward you [dark], or toward the "source" as a sink [light]. Force vectors impinging upon the viewer at angles to the central line of sight, as elicited by focal devices like slits, edges, pinholes, lenses, prisms, beamsplitters, etc. generate the light spectrum, blue to red. Dyes, filters, lasing materials, BE concentrates, and other variably acting surface materials modify the received hues by means of internal reflection [aka absorption] based on their peculiar electronic/electrical configurations.
If you read most of my 1000's of other posts on other threads regarding the nature of light, you will find my frequent reference to light as "beams" of finite diameter. So while it is convenient to model light vectors with optical ray diagrams, the finite nature of light is radiant beams, reminiscent of the root of this Christmas season!
"A dark mode can be intuitively understood by considering regular antennas: A single antenna, when driven by a current, radiates strongly, whereas two antennas — if driven by opposite currents and positioned very close to each other — radiate very little," explained Törmä.
"A dark mode in a nanoparticle array induces similar opposite-phase currents in each nanoparticle, but now with visible light frequencies.”
The laser operation in this work is based on silver nanoparticles arranged in a periodic array. In contrast to conventional lasers, where the feedback of the lasing signal is provided by ordinary mirrors, this nanolaser utilizes
radiative coupling between silver nanoparticles. These 100-nanometer-sized particles act as tiny antennas. To produce high intensity laser light, the interparticle distance was matched with the lasing wavelength so that all particles of the array radiate in unison.
http://www.nature.com/articles/ncomms13687Here, we experimentally demonstrate lasing at the visible wavelengths in both bright and dark modes of the plasmonic lattice. A new concept to access the dark modes is introduced, which is based on a gradual, coherent build-up of dipole moments in a finite lattice.
Due the density of both paper and post, may i be permitted a line-by-line attempt at response.Lasing at the nanometre scale promises strong light-matter interactions and ultrafast operation. Plasmonic resonances supported by metallic nanoparticles have extremely small mode volumes and high field enhancements, making them an ideal platform for studying nanoscale lasing. At visible frequencies, however, the applicability of plasmon resonances is limited due to strong ohmic and radiative losses. Intriguingly, plasmonic nanoparticle arrays support non-radiative dark modes that offer longer life-times but are inaccessible to far-field radiation. Here, we show lasing both in dark and bright modes of an array of silver nanoparticles combined with optically pumped dye molecules. Linewidths of 0.2 nm at visible wavelengths and room temperature are observed. Access to the dark modes is provided by a coherent out-coupling mechanism based on the finite size of the array. The results open a route to utilize all modes of plasmonic lattices, also the high-Q ones, for studies of strong light-matter interactions, condensation and photon fluids.
but an "impulse" involves matter, unless it is just thought/consciousness/spirit; in which case Kevin has a better explanation of light, seriously.Forget for now Fields, Particles and Waves: they are just temporal energetic forms.
Much like a musical synthesizer combines notes to generate a new sound, the laser pulse synthesizer combines pulses from the range of mid-IR wavelengths to generate shorter pulses. When the pulses are combined, constructive interference in the middle of the pulses is additive while deconstructive interference cancels out the outer edges of the pulses. The pulses become shorter and shorter, until a sub-cycle pulse is created...
By maintaining pulse stability and making sure that the pulses precisely overlapped both temporally and spatially, researchers were able to combine them into synthesized pulses that were only 13 fs wide and spanned 2.5 to 9 µ with 33 microjoules (µJ) of energy.
https://www.osapublishing.org/abstract. ... leSupplMat"These mid-IR pulses will allow new types of experiments that explore dynamics taking place in atoms, molecules and solids," said researcher Kyung-Han Hong. "For example, we can use them to take a movie of how electrons behave inside of atoms and solids."
The research team has explored using the high-energy, mid-IR pulses for high-harmonic generation to produce coherent pulses in the extreme UV and soft x-ray regions.
"Compared to near-IR and visible light, mid-IR pulses accelerate electrons to much higher energies and, thereby, generate higher energy photons," said Hong. "Also, isolation of soft x-ray pulses becomes easier at these wavelengths."
What one learns at school is that light oscillates under a right angle (transversal) with respect to its direction of propagation. Among experts, however, it was already known that light behaves differently when it is confined strongly in the transversal plane using so-called “photonic structures”.
In particular, this is the case for special ultra-thin glass fibers which have a diameter of only a few hundred nanometers (one nanometer is a millionth part of a millimeter) and which are thereby smaller than the wavelength of light. Also waveguides based on so-called “photonic crystals” (two-dimensional structures with periodically arranged holes) can confine light in this way.
In this situation, the light also oscillates along its propagation direction (longitudinal). The combination of transversal and longitudinal oscillation leads to a rotating electric field which physicist call circular polarization.
Without the spatial confinement, the electric field associated with circularly polarized light behaves like the propeller of an aircraft whose axis is parallel to the direction of propagation.
http://www.nanowerk.com/nanotechnology- ... =45704.php“However, in narrow photonic waveguides, the electric field of the light resembles the rotor of a helicopter,” explains Arno Rauschenbeutel from the Vienna Center for Quantum Science and Technology at the Institute of Atomic and Subatomic Physics of TU Wien, Austria.
Here, the spin of the light points along the axis of the rotor and is therefore oriented perpendicular to the propagation direction of the light....
This direction-dependence (chirality) is the underlying concept of “chiral quantum optics” and occurs not only for the emission of light, but also for absorption and scattering.
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