Here is a link to the type of student spectroscope used in many schools http://www.arborsci.com/prod-Quantitative_Spectroscope-206 .aspx
This is a link to the spectrum tubes http://www.arborsci.com/Products_Pages/LightColor/Spectrum .aspx
This is a link to the type of power supply used with the spectrum tubes http://www.arborsci.com/prod-Spectrum_Tube_Power_Supply-91 1.aspx
These links are provided for information purposes only. I am not endorsing Arbor Science.
----- Original Message -----From: DAVID KATZSent: Friday, October 01, 2010 11:21 AMSubject: Re: [DCHAS-L] UV protection & spectra tubesThe main reason welders wear dark lenses is so that they can see the bead of material as they weld. Although the lenses are designed to filter any UV or IR. It's similar to wearing didymium lenses for glassblowing.Also, wearing goggles when trying to view visible light spectra through one of those small school spectroscopes makes it very difficult to see the spectra through the small opening in the spectroscope. This is not one of those old carbon arc spectrographs that I learned on in my undergraduate days.David____________________________________________________________________ _____
David A. Katz
Chemist, Educator, Expert Demonstrator, Science Communicator, and Consultant
Programs and workshops for teachers, schools, museums, and the public
133 N. Desert Stream Dr. * Tucson, AZ 85745-2277 * USA
voice/fax: (520) 624-2207 * email: dakatz45**At_Symbol_Here**msn.com
Visit my web site: http://www.chymist.com
___________ ______________________________________________________________----- Original Message -----From: Ray MainerSent: Friday, October 01, 2010 7:26 AMSubject: [DCHAS-L] UV protection & spectra tubesAll,
Several years ago, I put several types of lenses (safety glasses,
goggles, and my eye glasses) in our UV-Vis spectrophotometer to see how
well they absorbed UV. The results I got showed high UV absorption and
were consistent with the manufactures' claims for UV absorption. The
exact results are lost in time somewhere.
The glass of the gas discharge tubes (If they are glass.) should absorb
much of the UV too. Thats why UV cuvettes are made out of quartz.
Could anybody check with a UV meter?
We can't weld with clear glassees because the visible and IR would also
damage the eyes.
Previous post | Top of Page | Next post