Conveners
Demonstrations: Demo Share-a-thon
- Angel Torres (University of Maryland)
- Sean Lally (Jemicy School)
- Clay Daetwyler (University of Maryland)
Superconductor properties such as the Meissner effect and flux tube pinning will be demonstrated with an intriguing "levitating train" magnetic track apparatus.
Students: determine the end correction using a set of nine cylindrical Helmholtz resonators. Resonators differ only by the diameter of a single hole at the top. Diameters $D$ were 4/8 to 13/8 inch in 1/8 inch increments. A homemade (analog) sweep spectrum analyzer (0-1000Hz) is essential. The essence of the frequency analyzer is a watch crystal oscillator ($f_o$=32.768kHz), a 4-element ladder...
I will present six center of mass demonstrations using inexpensive equipment:
a. Bet your fingers will meet in the middle of a meterstick.
b. Balancing a quarter on a dollar bill.
c. Bet you can't get out of a chair.
d. Removing one support leg from a Jenga block structure.
e. Cookie tin rolling uphill.
f. Balancing a soda can on its edge.
I will also provide a link to a Google...
Mixing colors with Christmas lights, a magnifying glass, a manual drill, and paper plates.
Distance, Velocity, and Time for Falling Putty Knife in Video and Spreadsheet
The presentation will show simple ways to demonstrate momentum and show how it is transferred using common physics apparatus such as Newton’s cradle and “Happy and Sad” balls. We will proceed to demonstrate the use of a dynamics track and two dynamics carts to illustrate the principles of conservation linear momentum, in a dynamic and interactive manner.
This presentation illustrates standing waves and nodes through the use of an acoustic levitator demo. The demo focuses sound waves to create multiple stationary nodes where small objects and liquids be levitated. The acoustic levitator provides an interesting way to explore the concept of standing waves and some of their fun applications.
I will demonstrate a Buoyant Force Lab:
1) Students are given: a Helium balloon on a light string attached to a 50g mass, an empty balloon, a balance, paper clips, and paper.
2) When the "pits" are opened the students have 15min to modify their balloon with paper and paper clips so that when released from the floor the balloon is the LAST balloon to hit the ceiling. This is a slow...
