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  2. Beryl (company) - Wikipedia

    en.wikipedia.org/wiki/Beryl_(company)

    Its founder Brooke developed the "Laserlight" bike lights which are now used as part of Santander Cycles, London's public bike hire scheme.This light projects an image of a bicycle, in green, onto the road about 6 metres (20 ft) ahead of the bike, visible round corners and in blind spots.

  3. Bicycle lighting - Wikipedia

    en.wikipedia.org/wiki/Bicycle_lighting

    Red light on the back of a bicycle Early bicycle lighting: candle lamps, oil lamps and carbide lamps Early bicycle lamps and two early bottle dynamos (1935). Bicycle lighting is illumination attached to bicycles whose purpose above all is, along with reflectors, to improve the visibility of the bicycle and its rider to other road users under circumstances of poor ambient illumination.

  4. Remote control - Wikipedia

    en.wikipedia.org/wiki/Remote_control

    When seen through a digital camera, the diode appears to be emitting pulses of purple light. Most remote controls for electronic appliances use a near infrared diode to emit a beam of light that reaches the device. A 940 nm wavelength LED is typical. [33] This infrared light is not visible to the human eye but picked up by sensors on the ...

  5. Safety reflector - Wikipedia

    en.wikipedia.org/wiki/Safety_reflector

    Retroreflector and Cat-Eye on a bicycle. A bicycle reflector or prism reflector is a common safety device found on the rear, front and wheels of bicycles. It uses the principle of retroreflection to alert another road user of the bicycle's presence on the road. The reflector is usually manufactured in the form of a moulded tile of transparent ...

  6. Backup camera - Wikipedia

    en.wikipedia.org/wiki/Backup_camera

    Backup camera view on the navigation screen of a Lexus IS 250 Backup camera on a Volkswagen Golf Mk7 hidden inside the logo. A backup camera (also called a reversing camera or rear-view camera) is a video camera specifically designed to be attached to the rear of a vehicle to aid in reversing and reduce the rear blind spot.

  7. Input device - Wikipedia

    en.wikipedia.org/wiki/Input_device

    A common computer input device, a keyboard. A user presses a key which transfers information to a computer. In computing, an input device is a piece of equipment used to provide data and control signals to an information processing system, such as a computer or information appliance.

  8. Bicycle drivetrain systems - Wikipedia

    en.wikipedia.org/wiki/Bicycle_drivetrain_systems

    A chain drive and rear derailleur gear change, the most popular system in use today A shaft-drive with crankset and rear gear hub. Bicycle drivetrain systems are used to transmit power on bicycles, tricycles, quadracycles, unicycles, or other human-powered vehicles from the riders to the drive wheels.

  9. Digital camera - Wikipedia

    en.wikipedia.org/wiki/Digital_camera

    While a typical DSLR has a mirror that reflects light from the lens up to the optical viewfinder, in a mirrorless camera, there is no optical viewfinder. The image sensor is exposed to light at all times, giving the user a digital preview of the image either on the built-in rear LCD screen or an electronic viewfinder (EVF). [51]

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