How do you know if  the ultra violet light is filtered from a light bulb?
553010
The manufacturer may be able to supply you with the spectral analysis for a particular light source.  For example flourescent bulbs use UV to cause phosphors to emit light and may absorb most or all the UV in the process.
12889
You are correct that the box is the color of the light it reflects.   Alternatively, you can say:  The box is the color not absorbed by the molecules on its surface.     But you would never say the box is the color absorbed by the molecules on its surface.   That is, your last statement is false.
238552
When subject to electric discharge in a vacuum tube, neon glows reddish-orange.  While neon is used as a generic term for glowing signs, other gasses are used to create colors other than red-orange.\n\nNeon can also be used in fluorescent black lights but the black-light effect is caused by the clear (or frosted) glass of the fluorescent tube being replaced with a Wood's glass, a nickel oxide, cobalt oxide-doped glass that blocks all light waves except for the ultra-violet spectrum.
800526
By electrickery of course! Nah basically in layman's terms the electrical energy passing through the gas inside the tube causes the gas to give off photons of light. There is no wire element getting hot and glowing, just gas. Different gas equals different colour light think of "neon lights". Others stuff is also put in along side the gas such as metal elements and often sodium. Street lamps are usually "sodium" bulbs. If you want to find out more use the term "gas discharge lamp" or similar and you'll be more successful in your searches.\n\nthis is worth a look http://en.wikipedia.org/wiki/Gas_discharge
482508
It is really a matter of which type of bulb you use.
121806
Assuming that each bulb is turned on, the answer would be no.  While bulb A may block the light cast by bulb B - the blocking of light is how shadows are formed - bulb A would cast its on rays, thereby illuminating the spot on the wall where the shadow would have otherwise been.
957818
I work with light bulbs and the light output is measured in C. lumens.
507988
Since your question refers to only the types of detectors used in HPLC, I assume that you understand how HPLC works so I will not go into that.  Each chemical refracts light differently.  As the various components elute from the column, a beam of light is passed through the eluted flow.  The components come out as bands of individual components.  Each band or component refracts the light and this refraction is measured by a detector.  The signal from the detector is amplified and sent to a recording device which records the refractive index of that component.  From the refractive Index, the component can be identified and by the strength of the signal, the amount can be determined.  \n\nThe UV/Visible detector simply uses the different wavelengths of light to determine the various components being eluted.  Each component absorbs light rays differently.  The wavelength Can be varied depending on the class of compounds being examined.  This allows for maximum sensitivity of the detector.  As each component is eluted, it passes through the detector.  The absorbence of light gives the identification of the component and the amount of light absorbed is directly related to its concentration.
897035
White light is actually made of all the colors of the "visible spectrum", which ranges from red to violet. A prism or a rainbow shows these colors by sorting light according to wavelength.\n\nLight passing through a completely transparent medium, like a pane of glass, will not show much difference.\n\nLight passing through a colored medium will allow mostly light of the color's wavelength to pass through, so you see that color.\n\nLight reflected off an object shows a color if the object reflects light of that frequency (wavelength).\n\nThe colors have to be there first. Color is not "acquired" by light.
477940
Haven't you noticed that violet seems dim compared to blue? That's because only the blue cones are reporting it, but the green cones report a little when blue light hit them.
215667
check ur connections and see if there are any loose wire or burnt bulbs
61894
I know this as light mill or photon mill. There is a vacuum inside. The vanes are black on one side and metallic on the other side, the metallic side reflecting photons while the black side will absorb it. The pulse exchanged is twice as high on the metallic side of the vanes as on the black side, causing the device to set in motion.
374484
Since the UV light has particular wavelength and energy, the atoms in the florescent material absorbs that energy and goes to excited state from ground state. but it nomore stable in the excited state. so it emits an energy with is in the range of visible region with some particular wavelength and returns to ground state. the wavelength corresponding colour is visible to us....
937754
Something involving atomic spectra.  For example see\nhttp://www.fas.harvard.edu/~scdiroff/lds/QuantumRelativity/StreetLampSpectra/StreetLampSpectra.html
823896
did you mean how does a light sensor work?
487877
The UV-VIS spectrum is due to the electronic transitions of the molecule. This is characteristic of a compound. Qualitative and quantitative estimations of compounds are possible by this non destructive technique. \n\nThe absorption (A) of a solution at a particular wavelength is given by Beer-Lambert's law ect = A where c is the concentration of the compound , t is the thickness of the cell and e is the molar extinction coefficient characteristic of the compound at a given wavelength. This principle is used for quantitative measurements. \n\nCary 5E is a high resolution spectrophotometer to study the electronic spectrum of solutions, single crystals and powder samples (in nujol mull) in the range of 3150-185 nm. This is a double beam instrument controlled by a microprocessor. Base line correction, repetitive scan, kinetics, derivative and concentration modes are possible. Diffuse reflectance is available for solid samples. VT accessory in the range 5-90 degrees Centigrade is available\n\nThis principle is used for quantitative measurements.
834292
If it is truly only emitting ultraviolet light then it would not produce any visible spectrum light.