"solar filter"

Ideal for filling burets and other narrow laboratory apparatus. The top diameter (ID) is 35 mm and stem diameter is 8 mm. Package of 12.

With this Solar Cell Kit, you can harness the power of the sun.

Use the solar radiation shield with HOBO external sensors for improved temperature measurement accuracy in locations exposed to sunlight.

High Quality for the Classroom.

Construct a Model House Using Solar Energy

A Comprehensive Tour of the Solar System

Introduce the Value of Reducing Carbon Footprint.

Filter Support Collar is a sturdy, molded rubber filter disc.

Economical and effective.

Following a step-by-step procedure, students mark, label, and rotate the Earth to illustrate and answer questions on solar intensity, rotation, and revolution, and angles of radiation.

Great for star gazing, introductory astronomy, handouts for lab groups, or small wall posters.

Lessons in Optics and Light in the Palm of Your Hand Colorfully illustrate additive and subtractive color mixing, color transmission, absorption and filtering of the different wavelengths of light with this set of primary and secondary color mixing paddles. You can also use the diffraction gratings in this set to view spectra from different light sources. Show students how a spectroscope, colored lights, and even polarized sunglasses work with the contents of this set.

Operates 1/2 to 3 volts, 100ma start-up / runs at 15ma no load.  Strong torque - 300 RPM @ 1/2 volt. Great for gear drives.  2mm shaft dia. Size 1 1/4" dia x 1 1/4" long. 

Lightweight and Abrasion-Resistant

Explore The Absorption of Light

Dramatic Results Mimic Effects of Sun on Living Tissue