Sentences with phrase «focused light beams»

Even though those glimpses proved fleeting, mere projections created by focused light beams reflected from the things of the world, the camera obscura emerged as the device of choice for painters by bringing the world directly onto the canvas.

In this procedure, a focused light beam is used to heat and cut the tissues, but it is still an amputation.

Not exact matches

The lamp portion can be adjusted 90 degrees and you can focus the center light for a broader or narrower beam.

You can also adjust the beam so it acts as a focused beam of light or a floodlight to brighten a wider area.

One - press Digital Focus easily changes the beam from full spotlight to full flood light.

The beam is easily adjustable so you can easily go from using this as a floodlight to a more focuses spot light.

And if this beam is also focused into a speck with a three millimeter diameter, then we get an intensity of light an order higher than the intensity of light close to the sun's surface, which has a radiation power of about 20 gigawatts a square meter.

These intense packets of sound emerge from the animal's forehead as a focused beam, much like the light from a miner's headlamp.

The results from the quantum - optics labs at the TU Vienna could give a new twist to research concerned with longitudinally oscillating light waves in very different scientific fields: Even a focused laser beam in free space has a longitudinal component.

He's done so by precisely focusing infrared laser light to selectively ionize, or steal the electrons from, air molecules at the beam's focal point, generating a flash of bluish - white plasma.

The gold particles on the plate act as nano - optics and make it possible to focus a beam of light below the diffraction limit so as to precisely measure something that is very small — right down to 20 nanometres.

The images then showed that the graphene plasmons focus away from the antenna, similar to the light beam that is concentrated with a lens or concave mirror.

A beam tightly focused by a telescope could greatly outshine a planet's host star at a particular wavelength, Townes realized, popping out as clearly as a red laser pointer aimed at someone from across a stadium flooded with white lights.

But supercontinuum lasers give off a focused beam packed with light from a much broader range of wavelengths.

Conventional rockets would carry the miniature probes into Earth orbit, and a synchronized array of ground - based lasers would then focus its beams on individual sails, imparting enough force to accelerate each probe to 20 percent of the speed of light.

To power a light sail, the transmitter would need to focus a beam on it continuously.

This work is an early glimpse at medical robots that doctors could navigate through a patient's body from the outside with a focused beam of light, Tang says.

Just as we use lenses to focus and reshape visible light, magnets are used to focus and reshape electron beams.

Rather than the light used in a traditional microscope, this technique uses focused beams of electrons to illuminate a sample and form images with atomic resolution.

At present, lenses and mirrors can not focus light into a beam much smaller than the light's wavelength — 500 nanometres for blue - green lasers.

The resin is so sensitive to light, and the beam so tightly focused, that the hair remains intact.

The device consists of a 75 - watt lamp, combined with optics that collect and focus the visible light into a targeted beam, which can be aimed like a flashlight.

Sunlight that makes it through falls onto the concentrator (2), a concave panel of 180 mirrors that focuses the light into a beam and sends it into a 16 - foot - long test chamber (3).

In 1968 Vladilen S. Letokhov first proposed that atoms could be trapped in a light beam using the dipole force, and 10 years later Arthur Ashkin of AT&T Bell Laboratories suggested a more practical trap based on focused laser beams.

«It's not a glass lens like you'd find in a camera,» Fischer said, «but we call the technique «electron lensing» because, like a lens that focuses light, the electron beam changes the trajectory of the protons flying through it.»

Because number plates in the UK are made to reflect light back in the direction of its origin, the infrared light can be focused into a very tight beam and placed close to the camera.

They focused a tight beam of light through the shell's opening, mimicking the light emitted from the animal's cells, and found that the entire snail lit up.

When a beam of light is focused on a polystyrene bead, the bead becomes polarized and is attracted to the field of the light beam.

The team envisions integration across scales by integrating images from different sources, such as light microscopes, focused ion beam scanning electron microscopes (FIBSEM), and TEM.

In NTA, particles in suspension are illuminated with a focused laser beam and light scattered from each particle is visible through magnifying optics fitted to a digital camera.

The research team then focused a beam of vacuum ultraviolet light from the synchrotron on the heated gas mixture that knocked away electrons (an effect known as ionization).

Arne Voie, David Burns and Francis Spelman focused a laser beam into a thin sheet to illuminate a fluorescent sample and captured the reflected light using a different objective lens oriented perpendicular to the plane of illumination (i.e. light sheet).

These beams interfere to form a single plane of excitation light that is thinner than the portion of the sample that is in focus.

Profile An efficient light which uses one or more lenses and an ellipsoidal reflector to focus the light into a sharp beam.

The light can be focused in order to alter the size of the light beam but it can not project gobo images.

Early Xenon light conversions were totally unsuitable for vehicle use because they did not form a distinct beam or focused pattern.

Variable - focus halogen headlamps - inc: projector low beams selectable light - sensing headlamps automatic lamp substitution

The new Focus will also offer an Adaptive Front Lighting System that will adjust the intensity and the headlight beam angle to the driving environment, in addition to a glare - free high beam function that is designed to avoid blinding cars in the oncoming lane.

The intense, focused beams of light help you to view colors more vividly and reduce fatigue at night.

Using a technology that is allowed here — an infrared night vision camera with pedestrian detection — Dynamic Light Spot uses focused spotlights in the lower fog lamps to project a bright, non-startling beam at pedestrians anywhere on a dark roadway for a few seconds.

The XSE also gets an Adaptive Front Lighting System, which will focus the forward beams around corners automatically, assisting in those curvy nighttime outings.

The all - new Focus lighting technologies including Adaptive Front Lighting System that adjusts the headlight beam angle and intensity to match the driving environment, and Glare - free high beam that removes the guilt of accidentally dazzling other drivers and helps users see more of the road ahead at night, are supported by advanced full - LED headlamps that use an innovative adjustable drum configuration for greater flexibility and softer, less distracting tranlighting technologies including Adaptive Front Lighting System that adjusts the headlight beam angle and intensity to match the driving environment, and Glare - free high beam that removes the guilt of accidentally dazzling other drivers and helps users see more of the road ahead at night, are supported by advanced full - LED headlamps that use an innovative adjustable drum configuration for greater flexibility and softer, less distracting tranLighting System that adjusts the headlight beam angle and intensity to match the driving environment, and Glare - free high beam that removes the guilt of accidentally dazzling other drivers and helps users see more of the road ahead at night, are supported by advanced full - LED headlamps that use an innovative adjustable drum configuration for greater flexibility and softer, less distracting transitions.

The operator can focus the narrow beam of light emitted by the laser on the cancer to vaporise it.

During the day with all the colour and sun light it can be hard to spot all of them that surround the reef's up here in the Gilis but on the night dive, focusing on our light beam and being in almost pitch black you can not but help to spot them scattered around and the colour you see is mind blowing.

Its beam is a search - light attempting to focus on the book, while an intermittent current of air agitates the pages.

«But in any case a monochromatic high - intensity highly focused coherent beam of light would be a fairly indicative sign of technology that could potentially be seen from very far away,» Bill Diamond, CEO of the SETI Institute explained.

Perhaps most complex is a phase detection sensor, which compares the luminosity values — intensity — of the beams of light that pass around either end of the G4 Plus's camera lens, and, if they differ, adjusts the focus.

Bulbs diffuse their light in every direction, like audio, but a flashlight directs a more powerful beam in a more focused channel.

This modern, deep - bowl fixture has a focused beam of light, making it ideal for an outdoor deck or entryway light.

Or, ceiling - mounted lights, flush - fitted for a streamlined, modern look, with directional spots and the right beam width to create a focused light are a practical alternative.