Starting this week, I would like to post a roundup, each Monday with three or four segments:
(1) a list of posts published the week before, just in case you were too busy last week.
(2) a short note on a physics fact. Some readers suggested I do it, so let me give it a shot.
(3) short notes or links to financial stuff I read last week. I read very little, but would like to force myself at least for the roundup post.
(4) a short list of posts from the archive for the benefit of new readers.
Why Monday? I prefer to publish heavy posts (calculators, analyzers etc. between Thursday to Sunday). Hence, Monday seemed like a natural choice. Blog stats suggest that readers use Monday to catch up on posts published the previous week.
I will do my best to ensure regular readers are not bored with this post using segments (2) and (3).
The week that was …
#> Notes from Dr. Shashikants talk on July 26th at Bangalore. Will post the Excel sheet she used this week.
#> A post on early retirement (by me) always seems to divide the readers! An early retirement illustration.
#> My workshop with Ashal Jauhari.
#> A question asked at the July 26th workshop.
An attempt to bust a myth about passive income.
#> An e-book based on a (nearly) unabridged collection of 20 posts written earlier. Thank you for generous reception.
From the archive
#> How Much Insurance Do I need? Use this comprehensive needs approach insurance calculator to find out.
#> Dr. Jacob Lund Fisker is a theoretical physicist who became financially independent in 5 years by saving upwards of 75% of his take-home pay. He has also written a book about how he did it. A calculator based on his approach. I am of the opinion that his method will not work in India (Is it possible to retire early in India?)
#> Thinking of taking a car loan? Hold it right there! Did you know that the value of a brand new car depreciates by 20% when you drive out of the showroom! Add to this a 15% depreciation in value each year (assuming normal wear and tear) the govt recommends! Read on …
#> Use this calculator to simulate Sensex returns from 1980 onwards. This gives you an idea of how the stock market works.
Our Crazy Universe!
If you type atom in Google and click on images, you will get a screenshot like this.
Most of us, even students after two courses of quantum mechanics picture the atom this way. The nucleus is the centre and electrons are moving around in nice definite orbits. In such a model, nothing prevents the electron from spiraling towards the nucleus. In this model, the standard deviation (that again!) of the electron is zero (like a fixed deposit)
In order for us to develop a model of the atom that is stable, it is mandatory to assume that the standard deviation or the uncertainty associated electrons position is extremely large. Meaning, we do not know that path traced out by an electron in an atom. We cannot know for the stable atoms and the Universe itself to exist!
For an atom to be stable, the electron’s path and be fuzzy which cannot be detected by the most sophisticated detector we have. Newton’s laws that help us detect the position of Chandrayaan or Mangalyaan to great precision, cannot be used to explain what the electron in a Hydrogen atom is doing!
Next time you think of an atom, think of a beehive with bees buzzing around so fast that you cannot track the bees.
Here’s hoping we all have a good week ahead.
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