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- Six Science posts #97
Six Science posts #97
Simulating smells, new atomic model, hot finds from cold data and more
Harshal Chhaya
November 23, 2025
Welcome new friends!
If you like this, share it with a friend. Stay curious!
Today - 11/23 (in the mm/dd format) - is Fibonacci Day
The Fibonacci series is a series of numbers where each number is the sum of previous two.
It goes: 1, 1, 2, 3, 5, 8, 13, 21, 34 - notice the 11/23?
It is a very interesting sequence of numbers - occurs in nature in many ways.
We had a special issue on the topic last year. Here’s the link for you to enjoy.
Remember, next year - you need to read it twice. And then 3 times in 2027. 😃
I scroll so you don’t have to.
Love,
Harshal
#1 🤯
This is one of the COOLEST things I have seen!
Stimulating the olfactory bulb with focused ultrasound to induce smell. What?!? 🤯
All the details are at https://writetobrain.com/olfactory
Can you imagine the applications? Hercules would have loved to smell some cinnamon buns while cleaning the stables!
#2 🤯
“The data was collected and sent to Earth in 2008, when ice particles impacted Cassini’s Cosmic Dust Analyzer instrument.”
New findings from 17 year old data!
Talk about a cold case!
More details: https://www.nasa.gov/missions/cassini/nasa-cassini-study-finds-organics-fresh-from-ocean-of-enceladus/
#3 🤯
“For almost 200 years, the prevailing explanation for ice’s slipperiness was that friction or pressure from a skate, boot, or tire melted a microscopic film of water on the surface, creating a lubricating layer.
A new study from Saarland University has overturned that long-standing idea. Instead, the true cause lies in the electric fields generated by molecular dipoles. When any object contacts ice, the partial charges in its own molecules interact with the highly ordered dipole arrangement of water molecules in the ice crystal. This electrostatic tug-of-war loosens the topmost layer of the ice lattice, transforming it into a thin, disordered, quasi-liquid film—without any need for heat or significant pressure.”
This is why science is fun. Even “obvious” and “well understood” phenoms aren’t!
#4 🤯
What a cool “hack” (in the best sense of the word")! 😀
Analog clocks become cool again!
#5 🤯
Will the folks who get this please explain to the young ones who don’t?
We need to share the knowledge and heed the warnings.
#6 🤯
“Wake up babe! New atomic model just dropped! And it sings!”
This is issue #97. Let’s see what makes 97 an interesting number:
The largest two-digit prime number in base 10
a Proth prime and a Pierpont prime as it is 3 × 25 + 1.
a Pierpont prime is a prime number of the form 2u ⋅ 3v + 1
A Proth number is a natural number N of the form N = k × 2n + 1
where k and n are positive integers, k is odd and 2n > k
the highest two-digit number where the sum of its digits is a square.
the number of primes less than 29 .
The numbers 97, 907, 9007, 90007 and 900007 are all primes, and they are all happy primes.
a happy number is a number which eventually reaches 1 when the number is replaced by the sum of the square of each digit
97 is a happy number because:
92 + 72 = 81 + 49 = 130
12 + 32 + 02 = 1 + 9 = 10
12 + 02 = 1
However, 9000007 (read as nine million seven) is composite and has the factorization 277 × 32491.
an emirp with 79 (emirp is prime, backwards)
Berkelium is a synthetic chemical element; it has symbol Bk and atomic number 97. It is named after the city of Berkeley, California.
Just over one gram of berkelium has been produced in the United States since 1967. There is no practical application of berkelium outside scientific research
There’s no country with 97 as their international country code. Instead, here’s all the country codes in the 97x series:
970 - Palestine (interchangeably with 972)
971 - United Arab Emirates
972 - Israel (also Palestine, interchangeably with 970)
973 - Bahrain
974 - Qatar
975 - Bhutan
976 - Mongolia
977 - Nepal
978 - unassigned (formerly assigned to Dubai, now part of 971 United Arab Emirates)
979 - Universal International Premium Rate Service (UIPRS); (formerly assigned to Abu Dhabi, now part of 971 United Arab Emirates)
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