Quantum Mechanics in a nutshell

This takes a little time to get to the point of the main question:

How come we can’t say that a particle is *right there* and that it is moving *that fast* in *that direction* ?

So bear with me. I’m going through these steps:

  • 1. The electron is a particle.
  • 2. The electron acts like a particle
  • 3. Sometimes the electron doesn’t act like a particle
  • 4. Sometimes the electron acts like a wave
  • 5. What is the location of the electron in QM?
  • 6. If the QM location is a probability distribution, what is the QM velocity?
  • 7. The location and velocity are both imprecise in QM.

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Thoughts on Earth Hour and the population of the world

So I’m reading comments on the web about Earth Hour – the annual international event to raise awareness of climate change.   Sponsored by the WWF, the organization asks that everyone in the world to turn off their lights for one hour, beginning at 8:30 p.m. local time on Saturday the 28th of March, 2009.  Today. Read more »

How many IP addresses are there?

120px-worldwidewebaroundgoogle How many IP Addresses are there?

Simple answer: 262,600,608,710,656, read as: 262 Trillion, 600 Billion, 608 Million, 710 Thousand and 656.

These are publicly available addresses that can be used for communicating between two devices over the network. Read more »

Hello world!

Bob MonahonWelcome to BobMonahon.Wordpress.com.  So, it’s Sunday and I’m doing my taxes.  My daughter Catherine’s in Washington, DC for the Power Shift student demonstration.  She’s our young activist!  With the big winter storm descending on the East coast tonight and tomorrow, she’ll stay an extra day and head back to school on Tuesday.

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