If you are going out of town for an extended period of time, you can ask USPS to hold your mail until you return by putting a “hold mail” request on their website.

More info at https://www.usps.com/manage/hold-mail.htm

The pressure at the bottom of the Mariana Trench is ~1000 times more than the pressure at the sea level. Even at these levels, the density of water goes up by just ~5%.

I knew water is an incompressible fluid. But did not realize how hard it is to compress it!

See also:

• https://en.wikipedia.org/wiki/Mariana_Trench → 2nd paragraph.
• https://physics.nmu.edu/~ddonovan/classes/Nph201/Homework/CHFLD/CHFLDP09.pdf - shows that an underwater vehicle's observation window at the bottom of the Mariana Trench will experience forces on the order of the weight of a jetliner.

• Caesar salad originated from Tijuana, Mexico.
  • https://en.wikipedia.org/wiki/Caesar_salad

• There are two ways to write the numbers in Chinese and Japanese. One is used in everyday writing and the other is used in commercial, accounting or financial contexts. The latter have more strokes and so can't be forged. For example, the number 1 is normally written as 一 but in commercial records it is written as 壹.

Ref:

• [1] https://en.wikipedia.org/wiki/Chinese_numerals#Ordinary_numerals
• [2] https://en.wikipedia.org/wiki/Japanese_numerals#Formal_numbers

• An ij in Dutch is pronounced as <ay> in “pay”. For example, Dijkstra in “Edsger Dijkstra” is pronounced as daykstra.

Ref:

• [1] https://en.wikipedia.org/wiki/IJ_(digraph)
• [2] https://en.wikipedia.org/wiki/Edsger_W._Dijkstra - has an audio file that shows how to say the name.

• The trailing 'i' in a Roman numeral used to be written as a 'j' . For example 1, 2, 3, 6, 7, and 8 are rendered as j, ij, iij, vj, vij, and viij. This is (1) to make it clear that the number has ended and (2) to make it harder to alter the numeral by adding more i's on the end.

Ref:

• [1] https://genealogy.stackexchange.com/questions/3748/what-is-the-significance-of-the-character-j-at-the-end-of-a-roman-numeral
• [2] https://blog.plover.com/2024/06/23/#script-potpourri

• There is a fruit called Durian (https://www.google.com/search?q=durian+fruit&tbm=isch). It looks similar to jack fruit but is an unrelated species (https://en.wikipedia.org/wiki/Durian). It is in huge demand in China (https://www.nytimes.com/2024/06/16/business/durian-china-malaysia-thailand.html).

• The frequency illusion (also known as the Baader–Meinhof phenomenon) is a cognitive bias in which a person notices a specific concept, word, or product more frequently after recently becoming aware of it.
  • Ref:- https://en.wikipedia.org/wiki/Frequency_illusion

• pandas has a resample function (https://pandas.pydata.org/docs/reference/api/pandas.DataFrame.resample.html) to change the frequency of timeseries. For example, let's say you have daily OHLC (open, high, low, close) data of a stock. You can use this function to convert it to monthly OHLC data. Very convenient!

• Shatapawali is a Marathi term which refers to an age-long Indian custom of taking a stroll after a meal.
  • https://en.wikipedia.org/wiki/Shatapawali
    • Walking at least 100 steps after lunch or dinner improves overall wellbeing.

TIL: An earworm is a song that you keep hearing in your head

Ref: https://dictionary.cambridge.org/us/dictionary/english/earworm

TIL: In order to be listed on Nasdaq, companies need to have a woman, “underrepresented minority” or “LGBTQ+” member in their board - or publicly explain why they don’t. If it is a big company, they require two such candidates.

Ref: https://www.wsj.com/articles/texas-stock-exchange-txse-new-york-blackrock-citadel-securities-james-lee-bb72c36c?mod=hp_opin_pos_1

• Octopuses have 3 hearts, 9 brains, and blue blood.
  • https://apnews.com/article/ba6e3fa5bb804565b9d6d666b6d40a73

• https://app.diagrams.net/ can be used to make application architecture diagrams. It is similar to Microsoft Visio but free.
• https://github.com/jgraph/drawio - the source code for https://app.diagrams.net
• https://excalidraw.com/ - sketch diagrams that have a hand-drawn feel to them
• https://github.com/excalidraw/excalidraw - the source code for https://excalidraw.com

• What is commonly referred to as “football” in the world, is called as “soccer” in America. But it is actually the English that started calling it that.
  • https://www.britannica.com/story/why-do-some-people-call-football-soccer