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  • Slotted Weight Sets Quick View
  • Slotted Weight Sets, Brass Plated Quick View
    • Slotted Weight Sets, Brass Plated Quick View

    • Slotted Weight Sets, Brass Plated

    • 10 gm hanger with nine slotted masses, each of 10 gm, total 100 gm.  50 gm hanger, 4 masses each of 50 gm, total 250 gm.  100 gm hanger with four slotted masses, each of 100 gm, total 500 gm.  Hanger with nine slotted masses, each of 100 gm, total 1000 gm.
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  • Solar Powered Car Quick View
    • Solar Powered Car Quick View

    • Solar Powered Car

    • Explore "Green Energy" on a small scale! This economical solar car operates on sunlight or a rechargeable AA battery. A four-position switch allows you to choose between running the car on the solar cell or the battery, recharging the battery from the solar cell, or "off." Two binding posts allow the voltage developed by the solar cell to be measured…
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  • Solar System Simulator Quick View
    • Solar System Simulator Quick View

    • Solar System Simulator

    • See the solar system in action! The Solar System Simulator is a three-dimensional model of our Sun and the eight planets. The calendar at the base allows the positioning of planets according to the date and shows the relative position between individual planets and the sun.
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  • Sound Resonance Kit Quick View
    • Sound Resonance Kit Quick View

    • Sound Resonance Kit

    • The pair of tuning forks in this kit is designed to demonstrate the resonance of sound and other acoustic phenomena. The kit includes two identical tuning forks, a rubber striker, a piece of clay to varying the frequency, and a plastic dish for sound wave observation. Ages 7+.
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  • Spatula Quick View
  • Spatula, Chattaway Quick View
  • Specific Heat Specimen Set Quick View
  • Spectrometer, Advanced Quick View
    • Spectrometer, Advanced Quick View

    • Spectrometer, Advanced

    • Vernier reading to 30 seconds of arc. The 175 mm diam. scale is fixed. The table and telescope movements are completely independent of each other and read to 30 seconds of arc using double-ended verniers and magnifiers. Both rotations have fine adjustment screws. Coarse adjustments can also be made by the release of the clamping screw. The collimator is mounted…
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  • Spectrometer, Standard Quick View
    • Spectrometer, Standard Quick View

    • Spectrometer, Standard

    • Reads to 6 minutes of arc (0.1°) 170 mm diameter metal scale graduated 360° x 1°, independently rotatable, with locking screw, vernier attached to the telescope reads to 0.1° (6 minutes of arc). The collimator is mounted on a fixed pillar, with an achromatic objective of 150 mm focal length and 21 mm aperture, and has an adjustable slit 6…
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  • Spectrum Tubes Quick View
    • Spectrum Tubes Quick View

    • Spectrum Tubes

    • Made of glass, 26 cm long overall, narrowed to capillary width for 8.5 to 10 cm of length. Metal wires holding the electrodes are sealed through the ends and welded to metal caps, which have loops for connecting wires. For use with Spectrum Tube Power supply PH61025.
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  • Speed of a Bubble Set Quick View
    • Speed of a Bubble Set Quick View

    • Speed of a Bubble Set

    • The set consists of three rugged, sealed, transparent plastic tubes containing colored fluids of three different viscosities. The bubble in each tube rises at a constant speed which depends on the type of fluid, the angle at which the tube is inclined, and to some extent the temperature. Students track the time it takes for an air bubble to move…
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