Table of Astronomy

Astronomy(8B):Stellar Astronomy

Astronomy(8D):Miscellaneous Astronomy

Lecture Demonstrations

Cosmology

PIRA classification 8C

8C10. Models of the Universe

PIRA #

Demonstration Name

Abstract

8C10.05

Cosmological Models

A discussion of Red Shift, unbound universe, and other factors, and how they are applied to comological models. See The Physics Teacher - TPT 18(9), 639

8C10.10

The Big Bang

The Big Bang and chirality of the universe. See The Physics Teacher - TPT 38(9), 564

8C10.20

Cosmic Microwave Background

The study of anisotropies in the CMB. See American Journal of Physics - AJP 70(2), 106

8C10.25

Steady State, Expanding, or Contracting Universe

The general Doppler formula in a nonstatic universe is derived. See American Journal of Physics - AJP 45(7), 642

8C10.25

Steady State, Expanding, or Contracting Universe

A look at the question " Is the universe open or closed"? See The Physics Teacher - TPT 16(3), 137

8C10.30

Expanding Universe

Pull a rubber hose threaded through five large styrofoam balls. See [ http://groups.physics.umn.edu/demo/old_page/astronomy.html University of Minnesota Handbook - 8C10.10]

8C10.30

Expanding Universe

Pull on a rubber rope with "galaxies" attached. See American Journal of Physics - AJP 50(6),571

8C10.30

Expanding Universe

Using a strip of latex to model how long a light pulse would take to travel from one galaxy to another in an expanding universe. See American Journal of Physics - AJP 69(2), 125

8C10.30

Expanding Universe

Use transparencies of a sample universe on the overhead to show center of expansion in an expanding universe. See The Physics Teacher - TPT 29(2), 103

8C10.35

Inflating Balloon

A balloon with galaxies drawn on is blown up with compressed air. See [ http://groups.physics.umn.edu/demo/old_page/astronomy.html University of Minnesota Handbook - 8C10.15]

8C10.37

Expanding Universe on a White Board

8C10.39

Expanding Universe

Are we able to use experimantal evidence to calculate the total vector momentum of our expanding universe. Is it zero? See The Physics Teacher - TPT 20(9), 617

8C10.40

Bubble Universe

Use a straw to blow bubbles in liquid soap. See [ http://groups.physics.umn.edu/demo/old_page/astronomy.html University of Minnesota Handbook - 8C10.20]

8C10.50

Galaxy Model

Show a 16" diameter galaxy model. See [ http://groups.physics.umn.edu/demo/old_page/astronomy.html University of Minnesota Handbook - 8C10.30]

8C10.55

View of Galactic Center

8C10.60

Spiral Galaxies

8C10.70

Radio Galaxies

8C10.80

One Million Galaxies

A poster showing 1 million galaxies taken at radio wavelengths.

8C20. Gravitational Effects

PIRA #

Demonstration Name

Abstract

8C20.10

Klein Bottle

A Klein bottle has been made from a 20 L flask. See [ http://groups.physics.umn.edu/demo/old_page/astronomy.html University of Minnesota Handbook - 8C10.40]

8C20.20

Moebius Strip

A strip of aluminum about six inches wide and six feet long is made into a Moebius strip. See [ http://groups.physics.umn.edu/demo/old_page/astronomy.html University of Minnesota Handbook - 8C10.45]

8C20.30

Saddle Shape

A ball is not stable when placed on a saddle shape, but surprisingly does become stable if the saddle shape is rotated. See American Journal of Physics - AJP 63(2), 186

8C20.30

Saddle Shape

A butternut squash provides a negative space over small distances. At large distances the space becomes positive. A hubbard squash has a positive space. See The Physics Teacher - TPT 15(5), 298

8C20.30

Saddle Shape

Two models of a negatively curved two-dimensional space. One of fiberglass, and one made with strings. See The Physics Teacher - TPT 33(5), 286

8C20.30

Saddle Shape

Two more examples. A hollowed out grapefruit is a positive space. Pringles potato chips are examples of negative space. See The Physics Teacher - TPT 16(1), 8

8C20.35

Non-Euclidean Geometry

A discussion of gravity touching on non-Euclidean geometry and the geometry of three dimensional space. See The Physics Teacher - TPT 22(9), 557

8C20.35

Non-Euclidean Geometry

A helpful discussion about space curvature and how to visualize it. See The Physics Teacher - TPT 29(3), 147

8C20.35

Non-Euclidean Geometry

Counting distant radio sources to determine if the overall curvature of space is positively curved, flat, or negatively curved. See The Physics Teacher - TPT 30(2), 92

8C20.40

Gravitational Lens

A machined Plexiglas lens bends light like a black hole. See University of Minnesota Handbook - 8C20.40

8C20.40

Gravitational Lenses

A computer program to visualize gravitational lenses. See American Journal of Physics - AJP 69(2), 218

8C20.40

Gravitational Lens

An equation is developed for constructing a Plexiglas lens. See American Journal of Physics - AJP 48(10),883

8C20.40

Gravitational Lens

Directions for constructing a gravitational lens simulator from Plexiglas. Ref: Phys.Rev. 133, B835 (1964). See American Journal of Physics - AJP 37(1),103

8C20.40

Gravitational Lens

A plastic lens that bends light the same way a black hole does. Theory and directions for construction of a lens. See American Journal of Physics - AJP 49(7),652

8C20.40

Gravitational Lens

Viewing a fish in a fish tank. Refraction of light as the optical counterpart of a gravitational lens. See The Physics Teacher - TPT 25(7), 440

8C20.40

Gravitational Lens

Constructions of a simple gravitational lens demonstration. See The Physics Teacher - TPT 34(9), 555

8C20.42

Gravitational Lens

Henry Cavendish and Johann von Soldner calculated that light would be deflected by gravitational bodies long before Einstein. See American Journal of Physics - AJP 56(5), 413

8C20.42

Gravitational Lens

How would the outer world look from an observer located in a gravitational lens. See American Journal of Physics - AJP 55(4), 336

8C20.42

Gravitational Lens

The principle of equivalence and the deflection of light by the Sun. See American Journal of Physics - AJP 46(8), 801

8C20.42

Gravitational Lens

The prediction and test of Einstein's 1916 prediction. See The Physics Teacher - TPT 38(9), 524

8C20.42

Gravitational Lens

Additional comments on TPT 38(9), 524. See The Physics Teacher - TPT 39(4), 198

8C20.43

Gravitational Lens

The black hole as a gravitational lens. See American Journal of Physics - AJP 55(5), 428

8C20.45

Galactic Lens

A machined Plexiglas lens bends light like an extended mass distribution. See American Journal of Physics - AJP 51(9),860

8C20.50

Gravitational Waves

Icebreaker activities to use when introducing the subject of gravitational waves. See The Physics Teacher - TPT 44(7), 416

8C20.50

Gravitational Waves

About the new generation of gravitational wave detectors. See The Physics Teacher - TPT 44(7), 420

8C20.50

Gravitational Waves

On the detection of gravitational waves. See The Physics Teacher - TPT 22(5), 282

8C20.60

Quasars

The use of quasars in teaching introductory special relativity. See American Journal of Physics - AJP 55(3), 214

8C20.60

Quasars

Quasars and superluminal velocities in astronomy. See The Physics Teacher - TPT 34(8), 496

8C20.70

Cosmic Strings

8C20.80

Dark Matter

Demonstrations

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