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Charles Link's latest activity
Charles Link
reacted to
phinds's post
in the thread
46 year old Voyager 1 once again sending real data
with
Like
.
After 5 months of sending a repeating loop of meaningless bits, the 46 year old Voyager 1 is back to sending actual data...
Sunday, 6:09 PM
Charles Link
reacted to
collinsmark's post
in the thread
Stargazing
Documenting the setup of my new telescope
with
Like
.
This thread is for documenting the setup of my new telescope. It's not completely new, I'll be using some peripherals from the old...
Sunday, 2:00 AM
Charles Link
replied to the thread
B
A simple trigonometry problem: Put eight coins around a central coin
.
I looked at this problem again the other day and one thing that might be worth mentioning is that it can be solved by using the law of...
Sunday, 1:39 AM
Charles Link
reacted to
JT Smith's post
in the thread
Photos of 4/8/24 solar eclipse
with
Like
.
A friend asked another friend if she'd taken the time to see the eclipse. She replied, "Why would I do that?" Anything short of of...
Apr 12, 2024
Charles Link
replied to the thread
Photos of 4/8/24 solar eclipse
.
Very interesting @collinsmark :-) I've had my telescope for 30+ years now, and I've seen the rings of Saturn with it, along with 4...
Apr 12, 2024
Charles Link
reacted to
collinsmark's post
in the thread
Photos of 4/8/24 solar eclipse
with
Love
.
Ah, yes, the Edmund Scientific Astroscan. It was a big hit in its day. Built with the underlying philosophies of "Keep it simple...
Apr 12, 2024
Charles Link
reacted to
dlgoff's post
in the thread
Photos of 4/8/24 solar eclipse
with
Like
.
I took some photos with my little Cannon "point and shoot", but it was just too bright, so I deleted them. But at least I got to see...
Apr 10, 2024
Charles Link
replied to the thread
Photos of 4/8/24 solar eclipse
.
https://en.wikipedia.org/wiki/Astroscan
Apr 9, 2024
Charles Link
replied to the thread
Photos of 4/8/24 solar eclipse
.
The above are two photos of today's eclipse in Chicago. I projected the image from my medium power telescope of the eclipsed sun onto a...
Apr 8, 2024
Charles Link
posted the thread
Photos of 4/8/24 solar eclipse
in
General Discussion
.
Apr 8, 2024
Charles Link
replied to the thread
I
Radiation from solid black bodies
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The reason the small aperture is placed in the box with the cavity is that then we have very nearly unity emissivity by Kirchhoff's law...
Apr 8, 2024
Charles Link
reacted to
Greg Bernhardt's post
in the thread
New Advisor Announcements
with
Like
.
@TSny has been awarded the Science Advisor badge!
Apr 6, 2024
Charles Link
reacted to
WWGD's post
in the thread
Motivating high school Physics students with Popcorn Physics
with
Like
.
Since Bob eats 1.5 times as fast, he'll eat 60% of it, while Mary finishes the remaining 40%. Since Bob eats 1 bag in 20 min, he'll eat...
Apr 3, 2024
Charles Link
replied to the thread
Motivating high school Physics students with Popcorn Physics
.
See https://www.physicsforums.com/threads/a-simple-trigonometry-problem-put-eight-coins-around-a-central-coin.971465/#post-6176083 for...
Apr 3, 2024
Charles Link
reacted to
PAllen's post
in the thread
Motivating high school Physics students with Popcorn Physics
with
Like
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Similar to my immediate approach, but I used Bob. After 20 minutes, Bob has eaten one bag and Mary 2/3 of a bag. That’s 5/3 bags in 20...
Apr 2, 2024
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