Today Motors - Commutator switches the field in the central coil so the north is pushed by the north Homework upto no 15 on page 127 Tomorrows Prac Parrallel Current and Current meters Next Friday Bring in your own motor
Wednesday, February 11, 2009
Homework Review
Correcting your work show you need to become familiar with the above.
Also:
Increase the orbit by 4, period by 8, orbit by 9, period by 27, orbit by 16 period by 64
Remember for an object, T is on the other side of the line to r, T are squared.
Centripetal is an adjective that describes a gravity, or external force that creates acceleration to the centre of a circle
Aether predicted MM show c depends on frame, MM negative, Impact in Scientific Method means Aether has to be abandoned.
Special Rel was developed as a thought experiment, generating hypotheses. Proven by K mesons life time being extended. Atomic Clocks in space craft, electrons increasing mass in TVs. Properties of Elements derived from Quantum Mechanics – Spectra and the fact that Hg is liquid.
Monday, February 9, 2009
Sunday, February 8, 2009
Wednesday, February 4, 2009
latest worksheets corrected
work sheet
The first theta is angle of current to field line, The second theta is the angle out of flat with the electric field.
Students have correctly worked out the need for a rotation switch or commutator for a DC motor.
Sunday, February 1, 2009
homework
Finish worksheet 2 and hand in to staffroom by 2 pm Tuesday
JH-GW-PW to catchup with questions 7 - 11
JH-GW-PW to catchup with questions 7 - 11
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About Me
- drhill
- I come from a Science family: My father Geoffrey Hill was Australia's first computer programmer on CSIRAC the fourth computer in the world. He is credited with invention of Computer music and the development of “Interprogram” a language before Basic. My PhD is in Atomic and Molecular Physics. I have researched the activated oxygen layer above the ozone layer, and 'Assigned' the world's smallest molecule. At the University of Toronto I researched high power UV lasers. I have specialized in automation in fibre optics. This developed into research in Machine Intellect and Robots. I have enjoyed work as an Explainer with Questacon and my time as a part-time soldier. I currently teach High School Science at Epping Boys’ High.