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Readers!

 

My July fund-raising campaign to celebrate the fifteenth anniversary since I began Behind the Black is now over. I want to thank all those who so generously donated or subscribed, especially those who have become regular supporters. I can't do this without your help. I also find it increasingly hard to express how much your support means to me. God bless you all!

 

The donations during this year's campaign were sadly less than previous years, but for this I blame myself. I am tired of begging for money, and so I put up the campaign announcement at the start of the month but had no desire to update it weekly to encourage more donations, as I have done in past years. This lack of begging likely contributed to the drop in donations.

 

No matter. I am here, and here I intend to stay. If you like what I do and have not yet donated or subscribed, please consider supporting my work here at Behind the Black. You can support me either by giving a one-time contribution or a regular subscription. There are four ways of doing so:

 

1. Zelle: This is the only internet method that charges no fees. All you have to do is use the Zelle link at your internet bank and give my name and email address (zimmerman at nasw dot org). What you donate is what I get.

 

2. Patreon: Go to my website there and pick one of five monthly subscription amounts, or by making a one-time donation.
 

3. A Paypal Donation or subscription:

 

4. Donate by check, payable to Robert Zimmerman and mailed to
 
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You can also support me by buying one of my books, as noted in the boxes interspersed throughout the webpage or shown in the menu above.


Euler’s Disk

An evening pause: Something for all those new home schoolers, and their parents, to puzzle over and use to learn something worthwhile and real.

Note also how the concave mirror eventually forces the disk into the center of the mirror.

Hat tip Phill Oltmann.

Genesis cover

On Christmas Eve 1968 three Americans became the first humans to visit another world. What they did to celebrate was unexpected and profound, and will be remembered throughout all human history. Genesis: the Story of Apollo 8, Robert Zimmerman's classic history of humanity's first journey to another world, tells that story, and it is now available as both an ebook and an audiobook, both with a foreword by Valerie Anders and a new introduction by Robert Zimmerman.

 

The print edition can be purchased at Amazon. from any other book seller, or direct from my ebook publisher, ebookit. The ebook is available everywhere for $5.99 (before discount) at amazon, or direct from my ebook publisher, ebookit. If you buy it from ebookit you don't support the big tech companies and the author gets a bigger cut much sooner.


The audiobook is also available at all these vendors, and is also free with a 30-day trial membership to Audible.
 

"Not simply about one mission, [Genesis] is also the history of America's quest for the moon... Zimmerman has done a masterful job of tying disparate events together into a solid account of one of America's greatest human triumphs."--San Antonio Express-News

3 comments

  • wayne

    Highly suggest any of the physics lectures from Walter Lewin for home-schooling purposes. (High school level.)
    –Get yourself a free test-copy (full functionality for 1 month) of Internet Download Manager (or similar downloading Program), download them all off yt, and burn them to DVD. (This by-passes all inserted commercials, and you have a physical copy.)
    [If you want ‘mental hygiene films’ from the 1950/1960’s, go to the Archive(dot)org.

    Professor Walter Lewin
    “I am Still Alive Because of D-Day”
    June 6, 2018
    https://youtu.be/p5bsw8GNqCM
    3:11

  • wayne

    a sample….

    MIT Physics 8.01x
    “Lecture 6 – Newton’s Laws”
    Walter Lewin
    https://youtu.be/oduZsA0Tk58
    49:15

    “Watch all my 94 MIT course lectures. Start with 8.01, then 8.02, then 8.03. Do all the homework and take all my exams. Homework and exams are posted below the video thumbnails. I guarantee you, that you will then not fail the Physics portion of any exam.”

  • Jeff Wright

    Now I wonder if this has a thermodynamic counterpart with “anti-freezing:”

    “When vibrations increase on cooling: Anti-freezing observed”

    From Aug 4 2021 phys.org at Helmholtz Association… nickel oxide.

    The term anti-freezing made me think back to Egon Bach’s ideas of work and “anti-work” when it came to “geometeors” as Olkhovatov thought Tunguska was..

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