# Engineering

Category: K7 RLC Circuits
Purpose: Demonstrate a barricade flasher circuit.

## K2-47: SPEEDOMETER MODEL

Purpose: Demonstrate operating principle of some speedometers.

## J7-31: VISIBLE HARD DRIVE

Purpose: See what the guts of a fixed magnetic drive look like.

## F5-31: MAGNUS EFFECT - FLETTNER'S SHIP

Purpose: Demonstrate the Magnus effect.

## G1-54: MASS'S DOUBLE PENDULUM

Purpose: Demonstrate the transition of potential energy into energy of oscillation of the pendulum, and the operation of an escapement.

## F4-53: ARCHIMEDES' SCREW

Category: F4 Fluid in Motion
Purpose: Demonstrate a pump mechanism invented by Archimedes.

## F4-51: VACUUM PUMP MODEL

Category: F4 Fluid in Motion
Purpose: Illustrate how a mechanical vacuum pump works.

## F2-12: HOT AIR BALLOON

Category: F2 Buoyancy
Purpose: Show that hot air is less dense than cold air by operating a hot air balloon.

## F1-14: PISTON DIAMETER VS TRAVEL - WORKING MODEL

Purpose: Show that with an incompressible fluid the bigger piston moves more slowly than the smaller piston.

## F1-11: HYDRAULIC PRESS

Purpose: Demonstrate dramatically Pascal's Law and the large forces attainable using hydraulic systems.

## D4-23: GYROCOMPASS

Category: D4 Gyroscopes
Purpose: Illustrate the operation of the gyrocompass.

## D4-21: SHIP STABILIZER

Category: D4 Gyroscopes
Purpose: Demonstrate how a gyroscope can stabilize the rocking of a ship.

## D2-12: TOPPLING CHIMNEY

Purpose: Demonstrate how a toppling chimney breaks up.

## B4-14: ELASTIC LIMIT OF WIRE

Category: B4 Elasticity
Purpose: Demonstrate the variation in tensile strength with wire diameter.

## E2-42: TELESCOPE MODEL

Category: E2 Astronomy
Purpose: Show how a telescope can view any point in the sky using a universal mount.

## B1-16: CORBELED ARCH

Purpose: Illustrate how the center of mass affects the stability of an arch

## A2-32: HEIGHT MEASUREMENT BY TRIGONOMETRY

Category: A2 Mathematics
Purpose: Determine the height of a student using trigonometry

## A1-43: CROSSING RODS

Purpose: Visualize three-dimensional figures

## A1-42: DRAWING PUZZLE - HALF CUBE

Purpose: Visualize three-dimensional figures

## A1-41: DRAWING PUZZLE - INTERSECTING RODS

Purpose: Visualize three-dimensional figures
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• #### B4-01 HOOKE'S LAW

Demonstrate the linear relationship between force and stretching for a simple spring. Read More
• #### B4-02: HOOKE'S LAW - COMPRESSING A SPRING

Demonstrate Hooke's law for a spring under compression. Read More
• #### B4-03: SPRINGS IN SERIES AND PARALLEL

Show static combinations of springs Read More
• #### B4-04: SPRING AND STRING THING

Illustrate series and parallel springs in a counterintuitive way. Read More
• #### B4-11: ELASTIC LIMIT OF RUBBER BAND

Demonstrate Hooke's law and elastic limit. Read More
• #### B4-12: ELASTIC LIMIT OF SOLDER SPRING

Demonstrate the elastic limit for an inherently inelastic object. Read More

• #### B4-14: ELASTIC LIMIT OF WIRE

Demonstrate the variation in tensile strength with wire diameter. Read More
• #### B4-21: DEFLECTION OF BEAM - OPTICAL LEVER

Demonstrate the small deflection of an aluminum beam due to weighting between supports. Read More
• #### B4-31: FAILURE OF WOOD IN COMPRESSION

Demonstrate the dependence of the compressional strength of wooden dowels on their diameter and length. Read More
• #### B4-32: CAN CRUSHER - WALL STABILITY

Show how a small change in the geometry of the can wall can dramatically affect its ability to support a Read More
• #### B4-33: EGG CRUSHER

Show that an egg can support unexpectedly high forces due to its curved shape. Read More
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