Daniel Kiefer

No, really, pi is wrong: The Tau Manifesto For millennia, the circle has been considered the most perfect of shapes, and the circle constant π captured the geometry of the circle in a single number. But π is wrong, and it’s time to set things ...

Happy τ-day! :)
τ = 2π = 6.28…
#TauDay #τday #PiDay

www.tauday.com

28.06.2025 21:20 — 👍 2    🔁 0    💬 0    📌 0

Happy Europe Day!

09.05.2025 06:16 — 👍 1985    🔁 455    💬 71    📌 63

While the world retreats behind tariffs, denies the climate crisis, drills for yesterday’s fuels and gambles away the future of our children—Europe designs Starline.
A pan-European high-speed rail network that slashes CO₂ emissions by up to 90% compared to flights. Fast, clean, connected.

12.04.2025 15:47 — 👍 255    🔁 46    💬 15    📌 4

A stylised green outline of an electrical plug curves across the top. In the centre is the bold text "47%" in black, followed by the text "Electricity generated from renewables in the EU in 2024" in a smaller font below. In the lower-left corner are faint line drawings of a wind turbine and solar panels. The European Commission logo is in the top right corner. The background has a faint watermark pattern.

2024 was a record year for renewables.

Renewable generation reached 47% of the EU power mix, helping to bring down average wholesale electricity prices since 2021

Here are some key figures ↓

12.04.2025 07:43 — 👍 591    🔁 147    💬 16    📌 11

Tariffs xkcd.com/3073

08.04.2025 00:03 — 👍 31473    🔁 8804    💬 260    📌 469

Biene auf einem blühenden Ast einer Rosaceae.

Frühling in Paris.

02.04.2025 18:33 — 👍 4    🔁 0    💬 0    📌 0

Do you love Rust, Typst, and Open Source? You may have found your dream job. Typst is looking for a Rust software engineer to work on the Typst compiler. Join us in Berlin or remotely anywhere from Germany or France. Learn more and apply: typst.app/jobs/

01.04.2025 16:21 — 👍 44    🔁 6    💬 4    📌 1