Today I learned a little about Python, Jupyter, and Pandas in this video: Data Analysis with Python for Excel Users – Full Course.
Data Analysis with Python for Excel Users – Full Course
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Category Archives: Mathematics
Claudius Ptolemaeus, Almagestum, 1515
Wow. On Wikipedia you can download a 1515 Latin translation of the Almagest: Claudius Ptolemaeus, Almagestum, 1515.
I was able to read this file on my Debian workstation after installing the package djview4.
New Book Teardown: Learning The Art of Electronics: A Hands-On Lab Course | In The Lab With Jay Jay
This post is part of my video blog: In The Lab With Jay Jay.
Support this channel on Patreon: https://www.patreon.com/JohnElliotV
Silly Job Title: Master Planner
This video is part of the New Book Teardown feature of my video blog.
In this video I take a look at Learning the Art of Electronics: A Hands-On Lab Course by Thomas C. Hayes and Paul Horowitz published in 2016. The book has 1,140 pages and is a companion to The Art of Electronics 3rd Edition.
Some notes about things of interest we noticed in the book:
- Xilinx was an American technology and semiconductor company, now owned by AMD
- the Ebers–Moll model is useful for modelling Bipolar junction transistors
- Hysteresis is the dependence of the state of a system on its history
- Wien’s bridge is used for precision measurement of capacitance in terms of resistance and frequency
- Wilson current mirror is a three-terminal circuit that accepts an input current at the input terminal and provides a “mirrored” current source or sink output at the output terminal
- a Bessel filter is a type of analog linear filter named in reference to Friedrich Bessel who developed the mathematical theory
- the video about the 6502 I watched recently is: The 6502 CPU Powered a Whole Generation!
- the Cypress PSoC is a family of microcontroller integrated circuits by Cypress Semiconductor
- octopart.com
- learningtheartofelectronics.com
New Book: The Art of Electronics 3rd Edition | In The Lab With Jay Jay
This post is part of my video blog: In The Lab With Jay Jay.
Silly Job Title: Charge Charmer
Support this channel on Patreon: https://www.patreon.com/JohnElliotV
This video is part of the New Book feature of my video blog.
In this video I review the venerable The Art of Electronics 3rd Edition by Paul Horowitz by Winfield Hill published in 2015. This monstrous tome includes some 1,220 pages.
This is a long video, because this is a long book!
While I was writing up these notes for the video I found a wealth of fun stuff. Here are a few links:
Final round of Silicon Chip books
My good friend Dubz shouted me another round of Silicon Chip books as can be seen here. I now own all the books which have been marked and I’ve pretty much purchased everything that was left.
Formalizing the proof of PFR in Lean4 using Blueprint
This in my feed today: Formalizing the proof of PFR in Lean4 using Blueprint: a short tour by Terence Tao. I would like to learn Lean.
A truly incredible fact about the number 37
This is cool: A truly incredible fact about the number 37. I didn’t read it closely but 37 is my lucky number, so it held some interest. The conclusion is:
37, the median value for the second prime factor of an integer; thus the probability that the second prime factor of an integer chosen at random is smaller than 37 is approximately one half.
Math homework
I will let you in on a little secret: I love doing math homework. Always have, always will. I love the process. I love reading the problems, thinking of solutions, and checking the questions off one by one. Even when it’s easy, it’s still fun.
Just for fun I’ve gone back to my old high school math textbooks. I’m skipping years 7 and 8 and starting with year 9. Then I will do 10, 11, and 12, at the highest level.
At the moment I’m working through Australian Signpost Mathematics New South Wales 9 (5.1-5.3) Student Book, which is the year 9 textbook. I’m only up to page 10, fractions and ratios. I should work on it more than I do. Let’s see what I can do about that. :)
The most difficult math problem in this year’s HSC
The “HSC” in Australia is the “High School Certificate” which you get when you graduate high school. In order to do that you have to take the final exam, known as the “HSC exam”, or simply the “HSC”.
When I did the HSC 24 odd years ago the top level maths course (which I took) was called “4 Unit Maths”, whereas these days the top level course is now called “Maths Extension 2”. I expect the difficulty increased over the decades too.
Here’s the hardest question from this year’s Maths Extension 2 HSC paper:
There’s an article about it all in the newspaper today: ‘Not seen a question like it’: The most difficult problem in this year’s HSC.
I don’t remember enough about complex numbers, geometry, and trigonometry to answer this question, it is quite beyond me.
Notation for ranges with included or excluded extremes
The square brackets are for a closed interval wherein endpoints are included.
The round brackets are for an open interval wherein endpoints are excluded.