Tired, as usual

Omg so tired, so tired.

Had class today from 8 to 9.30, Computing, but only reached at 8.50 as I woke up late. I ad went to sleep early but from 5am, I started having some sort of dream. When I encounter some problems in dreams, I find it hard to wake up. Like my mind does not want to leave that virtual reality till it solves the problem. Which by right should be easy since I control the elements there? Not that my unconscious mind is aware of that. The mind can be very complex at times.

Yeah so after that I went for Physics from 9.30 to 11.30. I disagreed with the definition of Lenz's law that my teacher provided. I preferred the one found in external textbooks. The difference was the e.m.f. and current.

What I liked: Lenz's Law states that the induced current flows in a direction that produces effects to oppose the change that induces it.


What my teacher liked: Lenz's Law states that the direction of the induced e.m.f. is such that it produces an effect which opposes the flux change causing it.

I approached him bout it after class and he explained his point to me. I could understand what his point was but I still don't agree with him.

Turns out, there are many different definitions on the web. This is because modern terms were not invented during Lenz's time and so a lot of variations were made when different people interpreted his law.

I finally settled on mixing some of them, and came up with this: When an emf is generated by a change in magnetic flux, the polarity of the induced emf is such that it produces a current (if the circuit is closed) whose magnetic field opposes the change which produces it.

I would discuss it with my teacher once again and hope he's ok with this one. I mean even if his definition is the best one around, there is no point in me memorizing it if I don't agree with it right.

Ya then after that I had lunch and went for maths. Was there for very long, until 3+ or 4. Took a break in between of course.

When I got home I was very tired, went to sleep from 6 to 8 and then had dinner. Blogging now. Would study Computing and a bit of physics later then would shower and sleep.

Would have sailing tmr from 2 to 5. Went to NUS open house yesterday, but feel lazy to blog about it.

Some food for though:

Sometimes there is no answer, but that does not stop us from finding solutions.