this is for science. please don't tell me to do my homework because i have looked everywhere and i can't find it!
also does anyone know what a spectrascope is?
i really appreciate the help!
2006-10-29 06:02:19 · 7 answers · asked by ? 5 in Science & Mathematics ➔ Chemistry
Quanta is more than one *quantum*. This word has the same root as "quantity". It means just that. A certain (variable) quantity of energy. It is a discrete packet of energy absorbed or emitted by a shift in electron energy level. The energy is tranferred by giving up or taking in one quantum or multiple quanta of energy.
A spectroscope is an optical instrument that looks at a beam of light (such as a hot flame or other source).
The spectroscope has a prism or other optical piece inside. It divides the light coming into it. A spectrum is the result of this division of light into different wavelengths. Elements can be identified by their characteristic lines (very narrow bands close to one wavelength at which there is heavy absorbance or emission).
2006-10-29 06:11:44 · answer #1 · answered by Anonymous · 1⤊ 0⤋
Quanta is a plural of quantum.
The smallest amount of a physical quantity that can exist independently, especially a discrete quantity of electromagnetic radiation.
This amount of energy regarded as a unit.
In physics, a quantum (plural: quanta) refers to an indivisible entity of energy. For instance, a "light quantum", being a unit of light (that is, a photon). In combinations like "quantum mechanics", "quantum optics", etc., it distinguishes a more specialized field of study.
The word comes from the Latin "quantus", for "how much".
Spectrometers known as spectroscopes :
are used in spectroscopic analysis to identify materials. Spectroscopes are used often in astronomy and some branches of chemistry. Early spectroscopes were simply a prism with graduations marking wavelengths of light. Modern spectroscopes generally use a diffraction grating, a movable slit, and some kind of photodetector, all automated and controlled by a computer. The spectroscope was invented by Gustav Robert Georg Kirchhoff and Robert Wilhelm Bunsen.
When a material is heated to incandescence it emits light that is characteristic of the atomic makeup of the material. Particular light frequencies give rise to sharply defined bands on the scale which can be thought of as fingerprints. For example, the element sodium has a very characteristic double yellow band known as the Sodium D-lines at 588.9950 and 589.5924 nanometers, the colour of which will be familiar to anyone who has seen a low pressure sodium vapor lamp.
A spectrometer is an optical instrument used to measure properties of light over a specific portion of the electromagnetic spectrum. The variable measured is most often the light's intensity but could also, for instance, be the polarization state. The independent variable is usually the wavelength of the light, normally expressed as some fraction of a meter, but sometimes expressed as some unit directly proportional to the photon energy, such as wavenumber or electron volts, which has a reciprocal relationship to wavelength.
2006-10-29 06:43:10 · answer #2 · answered by Anonymous · 1⤊ 0⤋
When you study "Quantum Mechanics", you will realize that a quanta is a small packet of energy. It can not be further divided.
Let us see an example.
If you have a battery. It basically contains chemical energy, which is converted to electrical energy. Now, you could divide the electrical energy and two things, say light a bulb and play a media player (I wish batteries provided that much energy!). But the point is that, theoretically at least, it can be done.
This does not happen with a quanta. You either use it fully or you do not use it at all.
2006-10-29 06:11:44 · answer #3 · answered by silver_sunil 1 · 1⤊ 0⤋
What Is A Quanta
2016-09-28 07:10:29 · answer #4 · answered by darras 4 · 0⤊ 0⤋
A quantum is the basic currency of Nature. It is the means by which energy of the four fundamental forces go from one form to the other and by which matter is traded to energy and vice versa, all this allowed by E=mc^2.
Each fundamental force has its own quantum.
The electromagnetic force has the photon. This brings about charge.
The weak nuclear force has the intermediate vector bosons (there is more than one kind of IVB). This brings about color.
The strong nuclear force has the gluons. This brings about flavor
The gravitational force has the gravitons, although this is quite a controversial quantum since many believe it does not exist (Einstein's General Theory says that gravity is simply time-space geometry). Gravitons, if they exist, bring about mass.
The quantum is the basic unit of each force. As an example, the electron of an atom and the nucleus of an atom has between them a photon, which sorts of 'bind' them to each other, kind of like two tennis players being 'bound together' by their mutual tennis ball. If the electron is made to jump from a state of lower energy to a state of higher energy, of course by an external force, a photon with a wavelength that corresponds to the energy difference between the two energy states is released. Humans percieve this ejection of photons in the form of light. The cause of the electron's jumping is caused by an external force, possibly a bombardment of photons. But becuase Nature is always thrifty in energy, the electron should release the energy it gained.
2006-10-29 06:31:01 · answer #5 · answered by pecier 3 · 1⤊ 0⤋
a quantum is a discrete value of electromagnetic energy. also known as a photon. quanta plural.
a spectrometer is used to observe the properties of light as it passes through certain substances. since these light properties are documented for known substances, a spectrometer can identify the elements in a compound just by the light it emits when it is illuminated. spectrometers are used to identify the composition of stars.
2006-10-29 06:04:34 · answer #6 · answered by Anonymous · 1⤊ 0⤋
A spectroscope enables you to see and compare the spectra produced by different light sources.
2006-10-29 06:08:54 · answer #7 · answered by JJ 7 · 1⤊ 0⤋