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||1R50.20d||Crystal Lattice Models||Show model of Copper||
||<#dddddd>1R50.20e||<#dddddd>Crystal Lattice Models||<#dddddd>Show model of Diamond {MISSING}||
||1R50.20f||Crystal Lattice Models||Show model of Fluorite ||
||1R50.20g||Crystal Lattice Models||Show model of Germanium||
||1R50.20h||Crystal Lattice Models||Show model of "N" Germanium||
||1R50.20i||Crystal Lattice Models||Show model of "P" Germanium||
||1R50.20j||Crystal Lattice Models||Show model of Graphite I||
||1R50.20k||Crystal Lattice Models||Show model of Graphite II||
||<#dddddd>1R50.20l||<#dddddd>Crystal Lattice Models||<#dddddd>Show model of Magnesium||
||<#dddddd>1R50.20m||<#dddddd>Crystal Lattice Models||<#dddddd>Show model of Silicone||
||1R50.20
n||Crystal Lattice Models||Show model of Sodium Chloride||
||1R50.20o||Crystal Lattice Models||Show model of YiBCO||
||1R50.20d||Crystal Lattice Models||Show model of Cesium Chloride||
||1R50.20e
||Crystal Lattice Models||Show model of Copper||
||<#dddddd>1R50.20f||<#dddddd>Crystal Lattice Models||<#dddddd>Show model of Diamond {MISSING}||
||1R50.20g||Crystal Lattice Models||Show model of Fluorite ||
||1R50.20h||Crystal Lattice Models||Show model of Germanium||
||1R50.20i||Crystal Lattice Models||Show model of "N" Germanium||
||1R50.20j||Crystal Lattice Models||Show model of "P" Germanium||
||1R50.20k||Crystal Lattice Models||Show model of Graphite I||
||1R50.20l||Crystal Lattice Models||Show model of Graphite II||
||1R50.20m||Crystal Lattice Models||Show model of Magnesium||
||1R50.20n||Crystal Lattice Models||Show model of Silicone||
||1R50.20o
||Crystal Lattice Models||Show model of Sodium Chloride||
||1R50.20p||Crystal Lattice Models||Show model of YiBCO||

Table of Mechanics

Mechanics (1Q): Rotational Dynamics

Lecture Demonstrations

Properties of Matter

PIRA classification 1R

62 Demonstrations listed of which 26 are grayed out

Grayed out demonstrations are not available or within our archive and are under consideration to be added.

1R10. Hooke's Law

PIRA #

Demonstration Name

Abstract

1R10.10

Hooke's_law (The Big Spring)

Add weights to a large vertical spring one kg at a time. Examining the force-displacement which is marked in Newtons.

1R10.25

Pull on a Horizontal Spring

Pull on a horizontal spring with a spring scale.

1R10.30

Springs in Series and Parallel

Pull on a spring, springs in series, and springs in parallel with a spring scale. Compare the force required to stretch each case.

1R20. Tensile and Compressive Stress

PIRA #

Demonstration Name

Abstract

1R20.10

Breaking Wire

Add weights to wire that is attached to the ceiling until the wire breaks. Insert a large spring scale if one wishes.

1R20.11

Elastic Limits

Stretch springs of copper and brass. The copper spring remains extended.

1R20.15

Young's Modulus

Hang weights from a wire that runs the length of the benches. Add 1/2 kg masses to the copper wire and show that the Stretched deflection goes back when the mass is removed. Use either laser and mirror optical lever to display the deflection or a arrow on the pulley. Add a lot of mass to show the Elastic Limit.

1R20.18

Poisson's Ratio

A rubber hose is stretched to show lateral contraction with increasing length.

1R20.20

Bending or Sagging Board

  Ten lbs. is hung from the center of a meter stick supported at the ends. Orient the meter stick on edge and then on the flat. Place the ends of a thin board on blocks, then add mass to the center.

1R20.20

Beams Under Stress

A rectangular cross section bar is loaded in the middle while resting on narrow and broad faces. Hang weights at the ends of extended beams. Use beams of different lengths and cross sections. Hang weights at the ends of extended beams. Use beams of different lengths and cross sections.

1R20.27

Aluminum/Steel Elasticity Paradox

Copper and brass rods sag different amounts under their own weight but steel and aluminum do not.

1R20.31

Stretch a Hole

Holes arranged circle in a rubber sheet deform into an ellipse when stretched.

1R20.32

Deformation Under Stress

A pattern is painted on a sheet of rubber and deformed by pulling on opposite sides.

1R20.38

Stress on a Brass Ring

A strain gauge bridge is used to measure the forces required to deform a brass ring. Diagram. Construction details.

1R20.60

Bologna Bottle

Pound a nail with a Bologna bottle, then add a carborundum crystal to shatter the bottle.

1R20.70

Prince Rupert's Drops

Drops of glass cooled quickly can be hit with a hammer but shatter when the tip is broken off.

1R30. Transfer of Angular Momentum

PIRA #

Demonstration Name

Abstract

1R30.10

Shear Pages of a Book

Use a very thick book to demonstrate shear.

1R30.11

Shear_Cards

Use a tall stack of cards placed sequentially off-center to create a ledge.

1R30.20

Materiel Shearing

Push on the top of a large foam block or use a large sponge or use a rectangular block of rubber to show shear of different materials.

1R30.30

Spring Cube

A 3x3x3 cube of 27 cork balls is held together with springs.

1R30.31

Plywood Sheets

A stack of plywood sheets with springs at the corners is used to show shear, torsion, bending, etc. 

1R30.35

Shear and Stress Modulus

Unsophisticated apparatus for measuring elastic constants of a thin flexible strip and rod.

1R30.40

Torsion Rod

Rods of various materials and diameters are twisted in a torsion lathe.

1R30.41

Bending and Twisting

Wind a copper strip around a rod and then remove the rod and pull the strip straight to show twisting.

1R30.45

Shear and Twist in Screw Dislocation

Rule a thick walled vacuum tube with a grid, slit lengthwise, and dislocate one unit.

1R30.xx

Train on a Bicycle Wheel

An "O"- Scale train is placed on a horizontal bicycle wheel that is free to rotate. When the train is running, one can let the train go around the track or have it stand still will the track is rotating underneath. 

1R30.xx

Wheel and Axle I

A large mid-evil looking wheel on an axle. A large lead ball on a rope is wound up on the axle and the wheel free to rotate.

1R40. Coefficient of Restitution

PIRA #

Demonstration Name

Abstract

1R40.10

Bouncing Ball

Drop balls of different material on to a tool steel plate. Loss of mechanical energy in the coefficient of restitution. Drop balls on a glass plate. Balls of various materials are bounced off plates of various materials.

1R40.12

Coefficient of Restitution

Rubber balls of differing elasticity and silly putty are dropped in a clear tube near a meter stick onto a steel surface.

1R40.13

Coefficient of Restitution in Baseballs

Analysis leading to a prediction of up to 15 foot difference in long fly balls due to variation in coefficient of restitution.

1R40.30

Happy and Sad Balls

A bouncy ball and a non-bouncy ball are dropped from the same height with very different outcomes demonstrating the difference between elastic and inelastic collisions.

1R50. Crystal Structure

PIRA #

Demonstration Name

Abstract

1R50.10

Solid Shapes

How to make solid tetrahedrons and octahedrons. How to make Solids

1R50.15

Solid Models

Styrofoam balls and steel ball bearings are used to make crystal models.

1R50.16a

Lattice Models

Show model of Body Centered Cubic (BCC)

1R50.16b

Lattice Models

Show model of Face Centered Cubic (FCC)

1R50.16c

Lattice Models

Show model of Hexagonal Close Packed (HCP)

1R50.16d

Lattice Models

Show model of Miller Indices

1R50.16e

Lattice Models

Show model of Sphalerite Model

1R50.16f

Lattice Models

Show model of Wurtzite Model

1R50.18

Elastic Crystal Models

Crystal models are built with a combination of compression and tension springs.

1R50.20a

Crystal Lattice Models

Show model of Calcite

1R50.20b

Crystal Lattice Models

Show model of Calcite 2

1R50.20c

Crystal Lattice Models

Show model of Carbon Dioxide

1R50.20d

Crystal Lattice Models

Show model of Cesium Chloride

1R50.20e

Crystal Lattice Models

Show model of Copper

1R50.20f

Crystal Lattice Models

Show model of Diamond {MISSING}

1R50.20g

Crystal Lattice Models

Show model of Fluorite

1R50.20h

Crystal Lattice Models

Show model of Germanium

1R50.20i

Crystal Lattice Models

Show model of "N" Germanium

1R50.20j

Crystal Lattice Models

Show model of "P" Germanium

1R50.20k

Crystal Lattice Models

Show model of Graphite I

1R50.20l

Crystal Lattice Models

Show model of Graphite II

1R50.20m

Crystal Lattice Models

Show model of Magnesium

1R50.20n

Crystal Lattice Models

Show model of Silicone

1R50.20o

Crystal Lattice Models

Show model of Sodium Chloride

1R50.20p

Crystal Lattice Models

Show model of YiBCO

1R50.22

Tennis Ball Crystals

Old tennis balls stacked together to give two close packed crystals.

1R50.30

Crystal Structure

Show natural crystals of salt, quartz, and other minerals, and lantern slides of snow crystals.

1R50.31

Crystal Growth in a Film

Crystal growth on a freezing soap film is observed through crossed Polaroids

1R50.31

Ice Nuclei

Large ice crystals form on the surface of a supercooled saturated sugar solution.

1R50.32

Make Tin Crystal

Pour pure tin into a Pyrex mold, other steps.

1R50.40

Stacking Fault Model

A closest packing spheres model that demonstrates a fault going from fcc to hcp.

1R50.40

Crystal Faults

One layer of small ball bearings between two Lucite sides.

1R50.45

Crushing Salt

A large salt crystal is crushed in a "c" clamp.

Demonstrations

Home

fw: PropertiesOfMatter (last edited 2013-07-22 19:34:59 by srnarf)