beam detector mirror have a 100 lenses
One can see an invisible laser beam by using special equipment like a laser beam detector or by observing the beam's reflection off of particles in the air.
Detector Condensing lenses Ocular lens Electron beam
One way to detect an invisible laser beam is to use a laser beam detector that includes a sensor sensitive to the specific wavelength of the laser. The detector can emit an audible or visual signal when it comes into contact with the laser beam, alerting the user to its presence. Alternatively, scattering material like smoke or dust may reveal the path of the laser beam by making it visible, or specialized camera equipment can be used to capture its trajectory.
Motion detector alarm systems operate by using light sources. A beam of light is aimed at the light sensor and anyone who passes causes the sensor to register.
The main difference between a photoelectric smoke detector and an ionization smoke detector is the way they detect smoke. Photoelectric detectors use a light beam to detect smoke particles, while ionization detectors use radioactive particles to detect smoke. Photoelectric detectors are better at detecting smoldering fires, while ionization detectors are more sensitive to fast-burning fires.
difference between detector and diode
A photo interrupter is an opto-electronic sub-system composed of an optical emitter and a detector with amplifier, typically with only logic level electrical output. The emitter uses simple beam forming optics to project light onto the detector, both elements being mechanically positioned with a fixed gap between them. The detector then can be used to sense if the free path between the emitter and the detector is blocked. When the beam path is blocked by an opaque object the logic output state switches, thus providing a non-contact presence sensor for automation. Transition edges can be used to trigger events, such as snapping a digital image with strobe illumination during high volume manufacturing to inspect aspects of production quality.
Radar is a palindrome for detector.
"radar" is a palindrome for detector.
Smoke detectors work in several ways. A point to point smoke detector detects smoke when the beam projected by the transmitter is obscured in a measurable way and detected by the receiver. A photoelectric detector sees smoke particles inside the detection chamber of the smoke detector because light inside the chamber is scattered in a measurable way. An ionization smoke detector detects smoke because the smoke particles change the 'charge' on the detection plate inside the smoke detector.
i just asked for a frequency detector jst as brain wave detector.