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Does infrared radiation penetrate through smoke?
Yes, long-wave infrared will penetrate even very dense smoke. That's why thermal imagers are effective in firefighting. For instance, you can feel the heat (infrared spectrum) through smoke, but you cannot usually see through smoke (visible spectrum).
Is smoke a transparent medium?
No, smoke is not considered a transparent medium because it does not transmit rays of light through it. An example of a transparent medium would be glass.
Why does smoke ocupy space?
Smoke is made up of small particles which have tiny mass. Any massive can occupy space. Light being electromagnetic cannot occupy space but traverses through space.
Why smoke particles appear as spots of light?
they are brightened by the light
Why smoke goes upward instead of going downward due to gravity?
Smoke is less dense than the air so by buoyancy in fluid (air) it moves upwards.
Why do lasers appear in smoke or water?
In order to be seen, light must reach the eye. Since laser light is coherent, it travels only along its line of propogation, so there is no light to be viewed from the side of the beam. However, when a laser beam passes through fog, it is reflected off of tiny particulate droplets of water in the fog (or smoke particles in smoke), so is diffused in all directions and can be observed. In order to be seen passing through water, there must be suspended particles in the water from which the light can be reflected. The beam should not be visible as it passes through perfectly pure water.
Does infrared radiation penetrate through smoke?
Yes, long-wave infrared will penetrate even very dense smoke. That's why thermal imagers are effective in firefighting. For instance, you can feel the heat (infrared spectrum) through smoke, but you cannot usually see through smoke (visible spectrum).
What is the tranducer used in a smoke detector?
There are two types:ionization - a tiny piece of Americium ionizes air in the transducer. a tiny electric current passes through this ionized air. smoke deionizes this air, reducing the current and tripping the alarm.photoelectric - a light and photocell in the transducer looks for smoke. smoke reduces the light falling on the photocell, tripping the alarm.
Why does the airplane create smoke?
It's not smoke, it's steam. When the water in the air passes through the airplane's engines, it warms up and becomes steam.
Does smoke create rainbows?
Light passing through a transparent medium like glass/water does. Smoke is made of small particles of unburnt carbon, and light passing through is does not get split into a rainbow.
Is gun sound and smoke produced at the same time?
The smoke is produced slightly before the sound. Smoke is produced by the ignition of the propellant in the round. The sound is produced when the bullet passes through the sound barrier.
Sentences with the word dense?
The smoke was so DENSE I couldn't see my 2 hand in front of me
Is smoke is transparent?
No, smoke is not considered a transparent medium because it does not transmit rays of light through it. An example of a transparent medium would be glass.
Is smoke a transparent medium?
No, smoke is not considered a transparent medium because it does not transmit rays of light through it. An example of a transparent medium would be glass.
A sentence with the word dense?
The smoke was so dense I couldn't see my hand two inches in front of my face. That student is really dense; he can't answer a single question.
What is a smoke alarm made out of?
Most smoke detectors work either by optical detection (photoelectric) or by physical process (ionization), while others use both detection methods to increase sensitivity to smoke. For the alarm part, in many single family detached and smaller multiple family housings, a smoke alarm is often powered only by a single disposable battery. An optical detector is a light sensor. When used as a smoke detector, it includes a light source (incandescent bulb or infrared LED), a lens to collimate the light into a beam, and a photodiode or other photoelectric sensor at an angle to the beam as a light detector. In the absence of smoke, the light passes in front of the detector in a straight line. When smoke enters the optical chamber across the path of the light beam, some light is scattered by the smoke particles, directing it at the sensor and thus triggering the alarm. An ionizing detector type of detector is cheaper than the optical detector; however, it is sometimes rejected because it is more prone to false alarms than photoelectric smoke detectors. It can detect particles of smoke that are too small to be visible. It includes about 37 kBq or 1 µCi of radioactive americium 241, corresponding to about 0.3 µg of the isotope. The radiation passes through an ionization chamber, an air-filled space between two electrodes, and permits a small, constant current between the electrodes. Any smoke that enters the chamber absorbs the alpha particles, which reduces the ionization and interrupts this current, setting off the alarm. From Wikipedia.
How can you see the beams of light from a car's headlights in fog or smoke?
the smoke reflects the light to your eyes then you see the smoke as a handicap for vision
