- Six STEM Tweets
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- Six Science posts #84
Six tweets that celebrate engineering and all things STEM.
I scroll so you don’t have to.
Lots of love for last week’s Venn diagram poetry. 😍
Thanks for all the feedback
If you missed it or want to share with someone you love, it’s at https://sixstemtweets.beehiiv.com/p/six-science-posts-83-5b383cee65b60a8e
(Thanks to the reader who asked about past special topic-specific issues. I have added a list of links at the bottom. Is there a specific topic you would like to have an entire issue on? Hit “reply” and let me know.)
#1 🤯
We can BEARLY believe it! It's been 20 years since the Mars Reconnaissance Orbiter (MRO) launched to Mars!
After arriving in Mars orbit in March 2006, MRO has been busy sending back detailed observations of the Martian surface (including this image taken on Dec 12, 2022).
— NASA History Office (@NASAhistory)
2:00 PM • Aug 12, 2025
We have a remote camera orbiting a planet sending us photos! 😲 🤯
#2 🤯
Interesting research turning WiFi signals into 3D human pose maps.
No cameras, just routers tracking body position through signal reflections.Paper: DensePose From WiFi
Read here: arxiv .org/pdf/2301.00250— Leon (@LeonWohlgemuth)
9:19 PM • Aug 11, 2025
I have been working with WiFi technology for many, many years now. Since before it had a name. Since before it was an IEEE standard.
And I am amazed at how prevalent it has become. With new uses and capabilities.
#3 🤯
When helicopters land in desert zones, sand grains strike the fast-spinning metal blades, creating a ring of white-hot sparks around the rotor. Called the Kopp-Etchells effect, it's often seen during night operations.
📸: Camden Thrasher
— Aviation (@webflite)
11:25 PM • Aug 12, 2025
#4 🤯
I never realized a half moon doesn't occur halfway between a full moon and a new moon
— critter (@BecomingCritter)
11:27 PM • Aug 15, 2025
I love learning about “routine” things that turn out to be not-so-routine
#5 🤯
An ångström is one ten-billionth of a meter (10⁻¹⁰ m). It's often used to measure the size of atoms, molecules, and wavelengths of light.
— Fermat's Library (@fermatslibrary)
2:35 PM • Aug 14, 2025
The :o looks like my face every time I find something cool and interesting to share with you all 😃
#6 🤯
😂
This is issue #84. Let’s see what makes 84 an interesting number:
84 is seven dozens
84 is a semiperfect number - because it is a multiple of 28, a perfect number
(28 is a perfect number because it is the sum of its divisors: 1 + 2 + 4 + 7 + 14)
The sum of the sixth pair of twin primes (41 + 43)
84 is the international calling code for Vietnam
84 is the atomic number of Polonium (symbol Po)
Polonium was discovered on 18 July 1898 by Marie Skłodowska-Curie and Pierre Curie, when it was extracted from the uranium ore pitchblende and identified solely by its strong radioactivity: it was the first element to be discovered in this way.
Polonium was named after Marie Skłodowska-Curie's homeland of Poland which at the time was under Russian, German, and Austro-Hungarian partition, and did not exist as an independent country. It was Curie's hope that naming the element after her native land would publicize its lack of independence. Polonium may be the first element named to highlight a political controversy. (from Wikipedia)
Part of the “It’s been 84 years” meme inspired by the “Titanic” movie 😃
About
This newsletter is my way of sharing interesting science-related news with my curious friends. I enjoy finding science and math connections in our world.
Please share this newsletter with others. Let’s encourage curiosity.
That’s it for this issue.
Hit ‘reply’ to tell me what you think.
And hit ‘forward’ to share with your friends and family.
Let’s all celebrate science and engineering and curiosity.
Best wishes,
Harshal