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

1. 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.
   
   
2. Extra-large viewing window, 3 inches (7.5 cm), makes it easier for one or more students to see the spectrum.
   
   
3. 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.
   
   
4. 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.
   
   
5. Brightest visible line markers help eliminate false identifications.
   
   
6. 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

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.

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.