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Do you see the wavelengths that are reflected or absorbed by matter?
We see wavelengths that are reflected off of matter.
How long does it take an airplane to get off the ground?
Depends on the aircraft, and the velocity of the air over the wings that produces enough lift to get the aircraft into the air. For aircraft that are STOL capable (Short Take Off and Landing) this time will be short, but ultimately it depends on the wind conditions, and the thrust of the aircraft. VTOL (Vertical Take Off and Landing) aircraft can take off instantaneously. There are too many variables to give a short answer, as stated above, but as an example, a fully loaded modern day commercial airliner like the Boeing 767-400 might have a take-off run of 9000' to 9500' before the main landing gear actually lifted off the ground.
What is the wavelength of night vision is it short or long?
wavelength from 0.9 to 7.0 so in a way you can say that the wavethength is short.First, a basic fact: light in the SWIR band is not visible to the human eye. The visible spectrum extends from wavelengths of 0.4 microns (blue, nearly ultraviolet to the eye) to 0.7 microns (deep red). Wavelengths longer than visible wavelengths can only be seen by dedicated sensors, such as InGaAs. But, although light in the shortwave infrared region is not visible to the eye, this light interacts with objects in a similar manner as visible wavelengths. That is, SWIR light is reflective light; it bounces off of objects much like visible light. As a result of its refelctive nature, SWIR light has shadows and contrast in its imagery. Images from an InGaAscameraare comparable to visible images in resolution and detail; however, SWIR images are not in color. This makes objects easily recognizeable and yields one of the tactical advantages of the SWIR, namely, object or individual identification.
How are discrete wavelengths of light emitted by an excited gas?
The gas is excited by electricity which moves electrons to a higher orbit in the inert gases atoms. When they fall back to where they were they give off a photon. That color is unique to that atom. The spectrograph of an element is unique to that atom alone. This is how we can tell what stars are made of.
Why is the emission spectrum of hydrogen made of discrete wavelengths rather than a continum of wavelengths?
The emission spectrum of all elements is made of discrete wavelengths. Electrons only exist in particular orbitals. They do not spin willy-nilly around the nucleus. If they receive energy, they jump from one orbital to a higher orbital. When they fall back to a lower orbital, they give off a discrete amount amount of energy. That discrete amount of energy comes as the form of light of a particular wavelength. Look at it as an electron having to be on one or another step instead of a ramp. Instead of continually rolling, it goes one step at a time.
Does sodium lighting give off UV?
No. Neither High or Low pressure Sodium Vapour lamps give off much energy in the UV wavelengths.
Do you see the wavelengths that are reflected or absorbed by matter?
We see wavelengths that are reflected off of matter.
What is a short tailed weasel with long fur called?
hole off
What were the short term and long term effects of the transpertation revolution on the economy?
short term the fell off the earth and died and long term they fsrted
What rays of sunlight are mostly utilized by chlorophyll in photosynthesis?
All wavelengths from Sunlight are used except for those of Green; which is Why Leaves appear Green - they give-off the light that they cannot use.
What does the Sun give off that gets through the ozone layer?
Wavelengths of UV-A, visible, and near infrared get past the ozone layer (and the layers above it). Wavelengths starting with microwaves and longer get selectively through to Earth's surface, as there is some absorption by water vapor and other constituents of lower atmospheric layers.
How long does the sun give off its' light?
it gives off light for 12 hours
Is there a procedure to retrieve engine fault codes from a 1994 Plymouth Acclaim without a scan tool?
Turn key on- off-on-off-on and count the long flash and the short flash. Looong-short-short = 12
In classical physics how does an atomic oscillator behave when heated in terms of energy emissions?
The oscillator starts at relatively low frequency and emits electromagnetic radiation of relatively low frequency (or long wavelength) and low intensity. As the heating continues, the frequency of oscillation also increases as does the frequency of the emitted radiation and the intensity of the radiation. A graph of intensity vs. wavelength would start high on the left (at short wavelengths) and fall off to the right exponentially to low intensity at long wavelengths. This graph would be at odds with the experimentally established graph of intensity vs. wavelength(which shows low intensity at short wavelengths) because the classical assumption that frequency of oscillation can increase continuously as the oscillators are heated is not correct. Frequency of oscillation can increase only in integral multiples of the fundamenal frequency.
What alkali metals give off the most electrons?
all alkali metals give off only one electrons. However cesium will give off electron easily. (Francium is not considered generally as it is radioactive with very short half life period).
Does officer have a long or short o?
The O in officer has a short O sound. It has the same sound as the word "off."
Riddle I am short and long at the same time you can cut me off but you can't stop me?
Hair
