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Two-sided
viewer designed by an astronomy teacher for ease
in seeing and identifying element and molecular
spectra from gas tubes.
User Comments
"Easier to use than hand spectroscopes!"
"Comparisons are speedy."
"Viewing spectra...no eye straining."
Features
- No longer hunt the Internet or multiple
textbooks for reference spectra--the 16 most
common gas tubes found in physics, astronomy and
chemistry labs/classes are on the Viewer!
Spectra, divided into four groups from the
Periodic Table, that are included are: Noble
Gases--Helium, Neon, Argon, Krypton, Xenon;
Metals--Sodium and Mercury; Non-Metals: Hydrogen,
Nitrogen, Oxygen, Chlorine, and Iodine; Molecules
and Mixtures--Air, Water, Carbon Dioxide.
- Extra-large viewing window, 3 inches (7.5 cm),
makes it easier for one or more students to see
the spectrum.
- The comparison spectra were made using the same
diffraction grating film, sharing the same scale,
resolution and light distribution as the viewed
spectrum when directions (included on both sides
of the Viewer) are followed.
- Measuring scales are approximately proportioned
to sine-theta instead of linear like most hand
spectroscopes, accommodating for the Law of
Diffraction and removing common systematic errors.
- Brightest visible line markers help eliminate
false identifications.
- Specifications: 5.75 x 8.5 inches (~14.5 x
21.5 cm). Comes with instructions/notes
sheet.
"...puts basic spectroscopy in the hands of
the masses at an affordable price." - Mike
Marks, Edutarium, MA

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Is your campus/school/neighborhood
really "green"? Here's a
two-sided viewer for studying local
area lighting for light and energy
efficiencies, and light
pollution.
Useful for physics, astronomy and
environmental science courses,
teachers or informal educators.
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The front side
shows 12 comparison spectra of High Pressure and
Low Pressure Sodium, Metal Halide, Mercury Vapor
with and without phosphor, Fluorescent and CFL,
and Incandescent lights, plus specialized lights
such as LEDs, Neon and "Black Light".
The obverse side has technical specifications
about different kinds of lights, their cost and
energy efficiency rankings, and a procedure on
how to determine your area's "green" level,
notes about lighting and their spectra, and a
general description about continuous, absorption
and emission spectra!
Comes with a two-page Notes sheet.
"Ooooh, I just got mine and love, love,
love it! Just what I wished I'd invented
years ago. We'll be using it for sidewalk
astronomy... " - Vivian White, Astronomy
Educator, San Francisco, CA
Costs:
1-$9.50, Prepackaged
sets: 10 - $85, 30 - $228, 40 - $285.
FREE SHIPPING for orders (USA) over $100 when
prepaid!
For other quantities
or for reselling, please contact us the phone
number below or by
email
Order by:
Telephone:
1-866-HERMOGRAPH (437-6647), Extension 1.
Fax:
+1-404-393-7037 (Use
this Form!)
Mail: Hermograph Press, 3605 Sandy Plains
Road, Suite 240-203H, Marietta, GA
USA 30066 (Use
this Form!)
Online: To
Teach The Stars Store.
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