Physics equations/Journal Sp15 Phy1120
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Monday, January 12, 2015
1/4 hour lab: "Proof of Galileo's velocity transformation rule. Train proof is a thought experiment: Geometric drawing: distances add, more than one clock is needed to measure speed. Clocks must be synchronized. Later: How can we synchronize two clocks?
Lecture: What did we do? I remember looking at a quiz and I remember noting that some equations were missing. I reinserted the missing equations.
Wednesday, January 14, 2015
3/4 hour lab: Two groups. C and Z do relativity. H and K do quantum mechanics. Both groups will write a summary lab report on their subject, due at the end of the semester. Today, C and Z will explain why it would appear that a person walking at 3 km/hr on a train moving at 50 km/hr might seem to be travelling at 53 km/hr to an observer on earth. Resolved that clock snchronization is achieved by standing in the middle.
Friday, January 16, 2015
No lab.
Monday, January 19, 2015
1.5 hour lab Angular diameter: 20 degrees (thumb to pinky)
Wednesday, January 21, 2015
Last, First, (initial), Date, # lab hours, Phy1120: Briefly describe todays lab; enter more details into your lab journal.
Friday, January 23, 2015
No lab today. But we do have a takehome lab worth up to 1/2 hour:
Falling beads on a string One essential lab skill is to efficiently document a procedure, often using a quickly drawn sketch.
- Make a quick sketch of the beads-on-string, not taking care to draw the bead spacing to any important scale. Label times,
and the initial heights math>h_0, \ h_1, \ h_2, //...</math>. Draw the paperclips simply and quickly, making them as identical as possible. Place a horizonal line at the "zeroth" paperclip. - Document the procedure in words.
- Solve the problem for
where T is a constant.
Monday, January 26, 2015
.5 hour lab. Sketches of pindrop experiment.
Wednesday, January 28, 2015
Last, First, (initial), Date, # lab hours, Phy1120: Briefly describe todays lab; enter more details into your lab journal.
Friday, January 30, 2015
No lab. Helped with wikiquizzes.
Monday, February 02, 2015
1.5 hour lab: Recalibrated bead drop experiment. Also looked at standing wave websites.
Lecture: Chapter 17 echoAndString Quiz. Also reviewed:
- Meaning of absolute zero and its historical relation to the ideal gas laws.
- Why frequency, wavelength, and phase speed are related.
- How to calculate the frequency of the n-th normal mode given string length and phase velocity.
Modern Physics: Demonstrated black body (prelude to photons as particles). Discussed websites on "Particle in a Box".
Wednesday, February 04, 2015
Two hour lab:
- The first spectacular success of Schrodinger's equation was predicting the energy levels of hydrogen. But the math is simpler of you consider the one dimensional case of Particle in a box
- The connection between the wave equation, probability and particle motion can be seen in at PhysWiki But what do these equations mean?. See also the first section (and only the first section) of
- In order to measure the speed of longitudinal wave in the 100 ft length of string, the class measured Young's modulus (i.e. the spring constant).
Friday, February 06, 2015
Last, First, (initial), Date, # lab hours, 2 h; Phy1120: Two hour lab: Young's Modulus on a string with application to sound waves. For now, all we need is Hooke's Law. OOps, this was two days ago.
Monday, February 09, 2015
Lecture: 18-Electric charge and field-Q:findE
1 hour Lab: Look at these websites. They are excellent.
- FHSST Physics Electric fields (wikibook) Good resource for the trig-based course.
- lab is essential and belongs on commons if we an put it there. It's a wiki!!!!
Wednesday, February 11, 2015
1.5 hours lab: Later we will learn that the static field theories of Newton (gravity) and Coulomb (electrostatics) are only approximations. In reality, fields propagate through space, often at the speed of light, but never faster. One way to observe this field propagation in slow motion is to use string and paperclips.
Today we messed arounde with a videocamera to see if it would work.
Friday, February 13, 2015
Last, First, (initial), Date, # lab hours, Phy1120: Briefly describe todays lab; enter more details into your lab journal.
Monday, February 16, 2015
One hour lab Beethoven's fugue and uncertainty
Wednesday, February 18, 2015
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Friday, February 20, 2015
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Monday, February 23, 2015
2 hour lab on entropy and steam tables
Wednesday, February 25, 2015
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Friday, February 27, 2015
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Monday, March 09, 2015
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Wednesday, March 11, 2015
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Friday, March 13, 2015
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Monday, March 16, 2015
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Wednesday, March 18, 2015
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Friday, March 20, 2015
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Monday, March 23, 2015
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Wednesday, March 25, 2015
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Friday, March 27, 2015
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Monday, March 30, 2015
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Wednesday, April 01, 2015
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Friday, April 03, 2015
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Monday, April 06, 2015
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Wednesday, April 08, 2015
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Friday, April 10, 2015
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Monday, April 13, 2015
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Wednesday, April 15, 2015
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Friday, April 17, 2015
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Monday, April 20, 2015
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Wednesday, April 22, 2015
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Friday, April 24, 2015
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Monday, April 27, 2015
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Wednesday, April 29, 2015
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Friday, May 01, 2015
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