# PHYSICS/PHYSICAL SCIENCE

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1. Sunset Egg 6 Pack Item # P2-1001
\$25.00

Explain why the sky is blue during the day but yellow at sunset! Amaze your students with this glass egg that acts like a little piece of the sky.

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2. Levitating Globe Item # P8-3201

The 3.25 inch Levitating globe is the ULTIMATE conversation piece and a must-have for home or office.

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3. Dye Sensitized Solar Cell Kit Item # P6-2150

Dye Sensitized Solar Cell (DSSC) Kit. Caltech scientists, working with local high school science teachers, have created a self-contained kit for their Juice from Juice project that demonstrates how you can use blackberry and other fruit juices to generate power from sunlight.

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4. Inertial Balance Set Item # P4-1051

The Inertial Balance helps students grasp the difference between mass and weight by letting them determine the inertial mass of an object directly, without the complications caused by the effects of gravity.

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5. Ferrofluid Display Cell Item # P8-4000
\$29.95

This Display Cell is a sealed glass bottle that contains ferrofluid in a suspension liquid. Strong magnet is included.

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6. Acrylic Pendulum Wave Item # P4-1755

Captivate your students using the Acrylic Pendulum Wave, which consists of a series of pendula with increasing time periods. When the nine pendula are simultaneously released, they produce the effect of a wave. Assembly required.

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7. Stirling Engine Item # P6-7100

Visually demonstrate the conversion of thermal energy into mechanical work to create electrical energy!

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8. Liquid Crystal Sheet Item # P1-2100

Studying heat and thermodynamics has never been this fun! Place your hand on this liquid crystal sheet and, as the temperature increases, watch the sheet change color from black to red, red to green, green to blue, and to black again! Changes color between 77-86 F (25-30 C). 6" x 6"

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9. RSpec-Explorer Item # P2-9505

Digitally capture an individual spectrum, and then compare it to a series of known spectra! The included camera and software make this an easy and inexpensive solution to studying quantitative spectral data in the classroom.

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10. SpillNot Item # P4-2500

Solve the Problem of Spilled Drinks with Physics! The SpillNot is a genius gadget that will let you carry an open beverage without spilling it. With a little bit of practice, spin a cup of liquid around in a circle without even losing a drop.