Lecture Demos

Results 1 - 10 of 67

Results

Scintillators

Scintillators

This is a collection of various scintillators, which give off photons when struck by energetic particles.

PIRA Code(s): 
9C40.67
Set up time: 
none
Physics and Science Concepts: 
Optics
Operation: 
Scintillators can be used as a part of an experiment or by themselves to detect energetic particles from a radioactive source or from the background.
Safety: 
Must have appropriate radiation health training prior to requiring sources. See the University of Delaware’s OSHA website.

Assortment of Timers

Assortment of Timers

A set of different timers.

PIRA Code(s): 
9B10.70
Set up time: 
1 minute
Physics and Science Concepts: 
Recording time
Operation: 
These are for use with various demonstrations that require timers.
Safety: 
None

Projection Meter

Projection Meter

A meter can be projected from an overhead on to a screen.

PIRA Code(s): 
9A36.20
Set up time: 
1 minute
Physics and Science Concepts: 
Angular Measurment
Operation: 
Place on overhead projector. Turn on overheard projector.
Safety: 
None

Shive Wave Model

Thin rods are mounted on a fine wire that twists easily.

PIRA Code(s): 
3B10.30
Set up time: 
none
Physics and Science Concepts: 
Torsion Waves, Waves and Oscillations
Operation: 
Displace the rod at one end to create a torsion pulse or wave. The other end can be left free to move, fixed in place, or critically damped. To damp the model, clip the damping cup to the last rod on one end to get an inverse reflex wave. The damping clip on the rod ends the wave entirely.
Safety: 
None

Centrifugal Force Paradox

In one demo, a wooden frame with two curved tubes is situated on a turntable. As the frame is spun, centrifugal force causes the ball in each tube to move outwards and up the curve of the tube. The other demo shows the same concept. As the frame is spun , the green liquid in it moves towards the outer edges of the frame, also due to centrifugal force.

PIRA Code(s): 
1Q30.60
Set up time: 
10 minutes
Physics and Science Concepts: 
Centrifugal force
Operation: 
Spin the frame and watch the two balls move outwards. For the plexiglass demo, squirt green liquid (or pour) into the frame so that the liquid is at least an inch deep. Then, plug in the cord.
Safety: 
Make sure objects and people are well clear of the spinning frame. Wear safety goggles during operation.

Overhead Projector

Overhead Projector

An overhead projector

PIRA Code(s): 
9A36.10
Set up time: 
none
Physics and Science Concepts: 
Equipment
Operation: 
Use the overhead projector with other PIRA demonstrations.
Safety: 
None

Video Camera

Video Camera

A black and white video camera with adjustable legs.

PIRA Code(s): 
9A34.60
Set up time: 
1 minute
Physics and Science Concepts: 
Recording
Operation: 
This camera can be used with other experiments.
Safety: 
None

Newton’s Rings

Newton’s Rings

Light is reflected from a thin film of air between a plane of glass and a spherical glass surface.

PIRA Code(s): 
6D30.10
Set up time: 
none
Physics and Science Concepts: 
Interference
Operation: 
Shine light through the rings so that they are reflected onto a wall. An overhead is good for this. Turn the screws on the frame to change the interference pattern.
Safety: 
Over head projector may be obtained from demo 9A36.10.

Protractors

Protractors

A set of large protractors

PIRA Code(s): 
9A10.12
Set up time: 
none
Physics and Science Concepts: 
Angular Measurment
Operation: 
Protractors can be used as lab equipment.
Safety: 
None

Orrery Model

Orrery Model

A mechanical model of the first six planets and sun is presented. The planets orbit the sun at the frequencies.

PIRA Code(s): 
8A10.10
Set up time: 
none
Physics and Science Concepts: 
Planetary Astronomy, Solar System
Operation: 
Plug in the model. Flip the right switch to have the planets move and the left switch to turn the light bulb on which represents the earth.
Safety: 
Do not touch the light bulb, it may get hot.