Hacker News: alexandrehtrb

New comment by alexandrehtrb in "An Engineer's Old Cooking Trick Is Going Viral, Divides the Internet"

alexandrehtrb — Tue, 18 Aug 2026 14:41:20 +0000

The engineer's name is Michael Chu, he made a website with cooking recipes structured as tables.

https://www.cookingforengineers.com/

An Engineer's Old Cooking Trick Is Going Viral, Divides the Internet

alexandrehtrb — Tue, 18 Aug 2026 14:40:42 +0000

Article URL: https://pleated-jeans.com/2026/08/15/engineers-forgotten-recipe-hack-viral-divides-internet/

Comments URL: https://news.ycombinator.com/item?id=49346312

Points: 62

# Comments: 57

Atlantic Meridional Overturning Circulation

alexandrehtrb — Sat, 15 Aug 2026 14:00:44 +0000

Article URL: https://marine.copernicus.eu/explainers/phenomena-threats/atlantic-meridional-overturning-circulation

Comments URL: https://news.ycombinator.com/item?id=49310632

Points: 9

# Comments: 1

New comment by alexandrehtrb in "My Rules for Using Spreadsheets"

alexandrehtrb — Thu, 13 Aug 2026 20:12:21 +0000

1) Today I learned that named cells exist in Excel.

2) Excel is great for technical and non-technical people. You can teach Excel even to 10-year-olds (I first used it when I was a student around that age).

3) 1,048,576 rows are more than enough for 99% of Excel use-cases.

4) Excel can connect to external data sources, like databases and APIs, which can perform heavier and more complex data operations, taking this responsibility away from the spreadsheet. SQL queries and procedure calls can be embedded inside Excel spreadsheets.

5) There are some Excel skills, like named cells and VBA functions, that most people don't know. It's a matter of sharing knowledge with them, so they can make better spreadsheets.

New comment by alexandrehtrb in "Ask HN: Do you still trace new codebases manually?"

alexandrehtrb — Fri, 10 Jul 2026 15:23:45 +0000

Ctrl+Shift+F to look for the term I'm interested in, then IntelliSense to see where that piece of code is used.

Dark Sky Lighting

alexandrehtrb — Thu, 25 Jun 2026 16:19:19 +0000

Article URL: https://www.savingourstars.org/darkskylighting#whatisdarkskylighting

Comments URL: https://news.ycombinator.com/item?id=48675653

Points: 244

# Comments: 54

Periodic Table of Computing

alexandrehtrb — Tue, 23 Jun 2026 14:10:50 +0000

Article URL: https://alexandrehtrb.github.io/periodic_table_of_computing.html

Comments URL: https://news.ycombinator.com/item?id=48645258

Points: 2

# Comments: 0

New comment by alexandrehtrb in "Map of Metal"

alexandrehtrb — Wed, 20 May 2026 14:57:46 +0000

I see Judas Priest, I upvote.

War may reshape fuel choices in transport sector

alexandrehtrb — Wed, 29 Apr 2026 18:50:16 +0000

Article URL: https://valorinternational.globo.com/economy/news/2026/04/27/war-may-reshape-fuel-choices-in-transport-sector.ghtml

Comments URL: https://news.ycombinator.com/item?id=47952675

Points: 1

# Comments: 0

New comment by alexandrehtrb in "Gallium oxide electronics withstand extreme cold"

alexandrehtrb — Wed, 29 Apr 2026 15:35:17 +0000

Interestingly, the article says that gallium oxide electronics can operate in extreme heat too, up to 500ºC.

New comment by alexandrehtrb in "Apple accelerates eco progress with highest-ever recycled materials"

alexandrehtrb — Thu, 16 Apr 2026 13:41:22 +0000

How about stop making planned obsolence products? How about not charging outrageous prices when their computers need repair?

New comment by alexandrehtrb in "Artemis II's toilet is a moon mission milestone"

alexandrehtrb — Fri, 03 Apr 2026 18:32:18 +0000

Fun fact: during the development of The Sims 1, the first object created was the toilet.

If Japan Can, Why Can't We? – NBC Documentary (1980) [video]

alexandrehtrb — Wed, 25 Mar 2026 14:39:00 +0000

Article URL: https://www.youtube.com/watch?v=vcG_Pmt_Ny4

Comments URL: https://news.ycombinator.com/item?id=47517941

Points: 2

# Comments: 0

New comment by alexandrehtrb in "President Nixon's Address About Oil Shortages (1973)"

alexandrehtrb — Sat, 21 Mar 2026 21:32:57 +0000

There are two Nixon's speeches about the 1973 oil crisis.

November 7, 1973

https://www.presidency.ucsb.edu/documents/address-the-nation...

November 25, 1973

https://www.presidency.ucsb.edu/documents/address-the-nation...

President Nixon's Address About Oil Shortages (1973)

alexandrehtrb — Sat, 21 Mar 2026 21:30:59 +0000

Article URL: https://www.presidency.ucsb.edu/documents/address-the-nation-about-policies-deal-with-the-energy-shortages

Comments URL: https://news.ycombinator.com/item?id=47471628

Points: 5

# Comments: 1

Blue-blocked lighting related to better patient outcomes in psychiatric ward

alexandrehtrb — Fri, 13 Mar 2026 15:33:54 +0000

Article URL: https://www.theguardian.com/science/2026/mar/13/how-the-colour-of-light-could-be-used-to-treat-mental-illness-norway

Comments URL: https://news.ycombinator.com/item?id=47365850

Points: 4

# Comments: 0

New comment by alexandrehtrb in "Ask HN: Why are electronics still so unrecyclable?"

alexandrehtrb — Thu, 12 Feb 2026 14:19:18 +0000

> I have some notes on a semiconductor fabrication process with just sustainable inputs: Ethyl Lactate, Lignin-Vitrimer, Nitrogen, CO2, Laser-induced Graphene, A-CNT, PCLP Photo-cleavable Lignin Polymer, Hexyl Cellulose

Yeah, I was thinking of something like that. If there are fewer chemical components, recycling gets easier.

Ask HN: Why are electronics still so unrecyclable?

alexandrehtrb — Wed, 11 Feb 2026 15:12:53 +0000

I was wondering why electronics and computer parts are so unrecyclable (is there a better word for that?).

From what I searched, only a small percentage of electronics are recycled and those that do, are through chemical processes. Electronics today use plastics and special metals, and extracting them isn't straightforward, because requires energy and big acid digestors.

Is there some kind of initiative on this area, on using other materials or designing chips and boards to be more recyclable or reusable?

Comments URL: https://news.ycombinator.com/item?id=46975933

Points: 74

# Comments: 139

New comment by alexandrehtrb in "Programming Patterns: The Story of the Jacquard Loom (2019)"

alexandrehtrb — Thu, 05 Feb 2026 15:13:11 +0000

Here is a video that explains better how it works:

https://www.youtube.com/watch?v=K6NgMNvK52A

New comment by alexandrehtrb in "[dead]"

alexandrehtrb — Tue, 27 Jan 2026 14:16:13 +0000

We shouldn't post politics news on Hacker News unless they are tech-related... if we allow this, it will grow worse through time. I am here to read tech content, not politics.