[DOC] [TLE] The Microscope [PAR] In 1673, with the aid of a crude microscope consisting of a biconcave lens 
enclosed in ... The former use visible light or ultraviolet rays to illuminate 
specimens. .... above or below the stage, depending on the type and make of the 
instrument. ... Thus, short wavelengths of the electromag-netic spectrum are 
better suited than... [DOC] [TLE] Ultraviolet - Wikipedia [PAR] In 1878 the effect of short-wavelength light on sterilizing bacteria was discovered. 
By 1903 it was known the most effective wavelengths were around 250 nm. [DOC] [TLE] Fused quartz - Wikipedia [PAR] Fused quartz or fused silica is glass consisting of silica in amorphous (non-
crystalline) form. ... It has better ultraviolet transmission than most other glasses, 
and so is used to make lenses and other optics for the ultraviolet spectrum. ..... 
Glass types  Low-expansion glass  Chemical engineering  Glass compositions  
Silicon... [DOC] [TLE] Principles of Light Microscopy - University of Maryland [PAR] This is the theoretical resolving power of a light microscope. ... condenser and the 
objective) it is possible to be able to resolve slightly better than 0.2 m. ... The 
quartz lenses provided slightly better resolution (dmin = 0.1 m), but image ... 
color) aberrations can be minimized by using multiple kinds of glass in 
combination. [DOC] [TLE] optics - Is a quartz lens necessary to prevent UV blocking on full ... [PAR] May 18, 2015 ... It's true that most lenses don't transmit very much UV light, however, it's not true ... 
I am not sure what the spectral transmission of glass is at 250nm but you can ... 
Eg, you would take a camera and then use a series of different light ... that is 
illuminated by the UV light to make sure that the lens can not only... [DOC] [TLE] Ultraviolet photography | randombio.com [PAR] Most types of DSLR cameras can be modified for ultraviolet. ... Short wavelengths 
were strongest in the red channel, while longer wavelengths appeared blue. ... 
manganese) in the glass produce a green fluorescence that make the light path 
visible. ..... Comparison of quartz lens vs. glass lens for ultraviolet photography. [DOC] [TLE] Generating and projecting black light - Horrorseek.com [PAR] Better still, many stores offer black lights when Halloween rolls around. ... 
designed to convert short wave UV into long wave UV; the glass envelope is .... 
400-Watt, weatherproof, integral ballast and igniter, 8" UV-A filter lens. .... A 750W 
minimum stage light is required; incandescent lamps make more UV than quartz 
lamps. [DOC] [TLE] Quartz - Facts for Now - Scholastic [PAR] Because pure quartz transmits the short waves of ultraviolet light better than 
glass does, clear quartz crystals are melted to make special lenses and prisms 
and ... Sand that is rich in quartz is used for making ordinary types of glass. 
Quartz... [DOC] [TLE] Ultraviolet and UV Lamps [PAR] Nov 16, 2009 ... These wavelengths are more hazardous than UVA wavelengths, and are ... glass 
(maybe quartz) to transmit the 253.7 nM UVC (shortwave UV) mercury line. ... 
There are UV fluorescent lamps with glass not dyed to block visible light. ... There 
is a type that emits wavelengths in the short end of the UVA... [DOC] [TLE] Reflected Ultraviolet Imaging for Forensics Applications [PAR] What is quite true is that a special lens made of quartz (more properly called 
fused .... a forensics imaging kit, which included a filter that is just like the black 
glass filters of ... Highly scattered UV waves: UV lightwaves have a short 
wavelength, which means that ... In some cases, UV imaging works better than 
raking-light. [DOC] [TLE] Ultraviolet [PAR] UVC rays are the highest energy, most dangerous type of ultraviolet light. ... with 
or those who might be exposed to ultraviolet radiation, particularly short wave UV
. ... Most plastic lenses give more protection than glass lenses, because, as noted 
above, .... Although 185 nm is better absorbed by DNA, the quartz glass used in... [DOC] [TLE] Olympus Microscopy Resource Center | Fluorescence Microscopy ... [PAR] Because the light intensity (in

Question: Quartz is more effective than glass for making lenses for this kind of light, UV for short
Answer: Ultraviolet