Slide Rule Collection Donated to Illinois Tech

Today, I received notice from the Library at the Illinois Institute of Technology that the slide rule collection I donated to the school is now on display. Over forty years ago, I started collecting slide rules and over the years, the collection grew to over thirty items. Earlier this year, I donated the collection to Illinois Tech, where I earned my Bachelor of Science degree in Materials Science and Engineering.

The collection also includes books of logarithmic and trigonometric values.

Some photos of the library display are shown below:

(photos by: Matt David, Director, Advancement Special Projects, IIT)

Other posts on slide rules: 

Math Vacation: 2022 Anniversaries (jamesmacmath.blogspot.com)

Math Vacation: Benford Distribution - Additional Thoughts (jamesmacmath.blogspot.com)

 

Anniversary of Euler's death

(Image: Jakob Emanuel Handmann - Kunstmuseum Basel, Public Domain)

Yesterday, September 18, 2023, was the 240th anniversary of the death of the Swiss mathematician Leonhard Euler. He was born in 1707 in Basel, Switzerland.

A more complete description of his life was recently published by Breakpoint Colson Center: Leonhard Euler: Called to Mathematics - Breakpoint (Includes an audio version).

Other posts in this blog related to Euler:

Math Vacation: Euler's Identity (jamesmacmath.blogspot.com)

(More on Euler’s Identity: Euler's identity - Wikipedia)

Math Vacation: Euler Characteristic of Polyhedra (jamesmacmath.blogspot.com)

Math Vacation: Project Euler (jamesmacmath.blogspot.com)

Math Vacation: Using Random Numbers to Estimate Pi (jamesmacmath.blogspot.com)

Math Vacation: Perfect Number Generator (jamesmacmath.blogspot.com)

More on Euler: Leonhard Euler - Wikipedia

 

 

Rosh Hashanah 5784

(Image: Iconfinder - ByteDance IconPark (oceanengine.com))

Last night (September 15, 2023) at sunset began Rosh Hashanah, beginning the new year 5784 in the Jewish Calendar. The Jewish calendar is the oldest calendar still in use today. It was started in the 9th century BC and based on biblical calculations that the creation took place in 3761 BC.