Nice addition to my Ring of Security. I live on a dark trail so at night it really lights up the walkway and street. The product feels durable and well built. Definitely will be purchasing more in the future.

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You can group Ring Lights together and connect them to your other compatible Ring devices and select Alexa-enabled devices with the Ring Bridge.

The technique works thanks to “surface plasmons” (surface excitations that involve billions of electrons) in the “gap” of the bow-tie gold nanostructures (see figure). When illuminated with the correct frequency of laser light, the surface plasmons can begin to resonate in unison, greatly increasing the local light field intensity. This phenomenon, known as resonant plasmon field enhancement, is already exploited in imaging techniques, such as surface-enhanced Raman scattering, which is sensitive enough to detect individual molecules on a metal surface.

These lights are really nice. The color of the light itself is very pleasing. They are easy to install and group together to light an entire walkway when motion is detected by just one of the lights.

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The team now plans to improve the conversion efficiency of the generated light by modifying the design of their nanostructure — for example, by making 3D cones with sharper tips. These will not only enable higher local field enhancement but also better interaction of the femtosecond light pulses with injected gas atoms. The team will also test the spatial and temporal coherence of the generated EUV light.

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However, EUV radiation is currently produced in a very complicated process involving the use of amplified light pulses from an oscillator (a source of laser light) to ionize noble gas atoms. The electrons freed during this process are accelerated in the light field and their surplus energy is freed as attosecond (10–18 s) pulses of light of different wavelengths. The shortest wavelengths of light can then be “filtered out” to produce a single EUV pulse.

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Have your Lighting automatically illuminate your yard or walkways at the same time every evening and turn off when you want them to.

Always come home to a brightly lit house. Add Lighting around your home and control them from the Ring App. Turn lights on or off while you’re away. Link your lights to select Ring Video Doorbells and Security Cameras, so they shine when motion is detected. And best of all, choose from new solar-powered options for added flexibility.

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Opaque specimens are typically illuminated from above (with reflected light), using orientations ranging from on-axis (parallel to the microscope optics) to ...

Your Ring Bridge should be placed indoors within reach of a good Wi-Fi signal and in a centrally-located place relative to your Ring Lights. Best practice is not to install it in a metal cabinet or closet, but to leave it out in the open so the signal is not restricted.

The Ring Bridge is required to enable smart controls and notifications for Ring Lights, pair Ring Lights together, and connect them to Ring Doorbells, Cameras, and select Alexa-enabled devices.

Light every step you take. Pathlights are perfect for driveways, walkways and gardens while Steplights illuminate decks and stairs. Already have landscape lights? Connect compatible lights to our Transformer to control them from the Ring App.

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An infrared light absorbing layer is used to reduce cross-talk in an imager by absorbing the infrared light that leaks from the neighboring pixels.

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Without the Ring Bridge, Ring Lights will shine as soon as motion is detected or the light is turned on, but you won’t be able to customize your settings. You also will not be able to pair your Ring Lights into groups, receive notifications, or connect Ring Lights to other compatible Ring or Alexa-enabled devices.

The Ring Bridge brings it all together in Ring app. There, you can completely customize your smart controls and create action combinations. For example, if you connect a Ring Lighting Floodlight to a compatible Ring Video Doorbell via the Ring Bridge, it can activate your doorbell as soon as your floodlight detects motion.

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202019 — Cause of Dispersion: When white light passes through a glass prism, its constituent colours (red, orange, yellow, green, blue, indigo, ...

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Your Ring app will notify you when your battery is running low. Place in direct sunlight to recharge and store power. If additional charge is needed, see the instructions below.

Or have your Ring Lights work together to illuminate a pathway or light up your entire yard if one detects motion. The possibilities are endless.

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EUV light has a wavelength of between around 5 and 50 nm (100–10 times shorter than that of visible light). It can thus be used to etch patterns at tiny length scales and is ideal for spectroscopic applications because the wavelength is the same as that of many atomic transitions.

Scientists would ideally like to produce EUV light directly from the oscillator without the need for expensive and bulky amplifiers. In this way, EUV-light generation could be simplified and the size of the source significantly reduced to tabletop dimensions. In contrast, current devices usually measure around 2–3 m across. Now, Seung-Woo Kim of KAIST in Daejeon and colleagues have shown that this might be possible.

Immediate applications include high-resolution imaging of biological objects, advanced lithography of nanoscale patterns and making X-ray clocks. These exploit a frequency-stabilized femtosecond laser and are being investigated worldwide to replace the current caesium atomic clocks for better time precision.

“This new method of short-wavelength light generation will open doors in imaging, lithography and spectroscopy on the nanoscale,” commented Mark Stockman of the Georgia State University in a related article (Nature 453 731). The spatially coherent, laser-like light could have applications in many areas: spectroscopy; screening for defects in materials; and, if extended to X-ray or gamma-wavelengths, detecting minute amounts of fissile materials for public security and defence.

Ring Bridge is the hub of your Lighting. It enables smart security features and connects your Ring lights with other compatible devices.

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Shine a light from up high with mounted lights. Illuminate large areas like the driveway and backyard with Floodlights for security and safety. Or focus on a single area like a porch or shed with Spotlights.

When light reflects off a surface, its path is determined by the laws of reflection of light. These laws are applicable to all kinds of reflecting surfaces.

Adjust the brightness and motion settings of your Lighting. Plus create countless combinations to customize your Ring of Security.

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In this lesson we will begin to see that concave mirrors are capable of producing real images (as well as virtual images).

Enjoy the flexibility of energy-efficient smart LED bulbs. Simply screw into compatible lamp sockets for smart control from anywhere.

Pathlight and Steplight- The Solar Pathlight or Solar Steplight can also be recharged by bringing the unit inside and connecting it via micro USB. The unit will blink on and off as it charges, and then glow on when it is fully charged.

A new system to generate coherent extreme-ultraviolet (EUV) light has been developed by researchers in Korea. The device, based on a nanostructure made of bow-tie shaped gold “antennas” on a sapphire substrate, is smaller and cheaper than existing systems and might allow an EUV source the size of a laptop computer to be made. Potential applications for the source include high-resolution biological imaging, advanced lithography of nanoscale patterns and perhaps even “X-ray clocks”.

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The Ring Bridge also allows you to connect your lights to select Alexa-enabled devices, so you can hear announcements, turn on Ring Lights when motion is detected, and adjust the settings at the sound of your voice.

The researchers report that a bow-tie nanostructure of gold — measuring around 20 nm across — can enhance the intensity of femtosecond laser light pulses by two orders of magnitude. This is high enough to generate EUV light with a wavelength of less than 50 nm directly from a small pulse with an energy of 1011 W/cm2 injected into argon gas (Nature 453 757). The energy needed is about 100 times less than in traditional approaches.

Hardwired lights give you nonstop power around the clock. Battery-operated lights can be placed almost anywhere. And solar lights offer added convenience.

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Group Ring Lighting together to customize how they illuminate. If one light detects motion, it can brighten up a pathway or make your whole yard shine.

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I purchased four of these along with the Bridge and these things are sturdy – they work. The brightness levels are very good and they interact with your other motion sensors.