Excellent for experimenting with density and volume. Includes 10 mm cube, 20 mm cube, and 30 mm x 20 mm x 10 mm block of six metals: aluminum, brass, copper, lead, steel, and zinc. WARNING: Choking Hazard. Small Parts. Not for children under 3 yrs
Ever wonder how a clock works? For centuries the pendulum clock was used to keep time. The Simple Pendulum kit shows you why you can measure time with a ball and string and how to do it. Includes a tape measure, two different pendulum balls, six feet of string, and an activity guide. Ages 7+.
Consists of a resistance wire with a sliding contact and a strip of aluminum to provide two “arms” of the bridge for known and unknown resistance. Strips of heavy aluminum are provided with a single gap in each of two arms for the resistance. All components are mounted on a heavy sheet metal base. With Instructions.
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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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…
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+.
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…
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…
