Each recipe has ingredients which is also a recipe, follow them to make your food from scratch!

A calculator that can calculate the relative humidity based on temperature and water content

python, php, bash

Every mountain, building and tree shadow in the world simulated for any date and time

Interactive article explaining how sound works.

Keywords: blog post scroll example air pressure movement distance wave

Groen Brothers commercial spoof of an anti-mosquito laser system

french project for open source "real-time kinematic positioning" (RTK positioning)

Costs about 400 euros for the base station (called base) and mobile part (called rover), each.

Keywords: gps, subcentimeter, centimetre, centimeter, accuracy, accurate, precision, precise, coverage network, urban corridor

The easy-to-use getaway to historical maps in libraries around the world.

List/table of small/lightweight/tiny/slim js/javascript frameworks/libraries. Should need no build tools or transpilation or compiling/compilers

conlang

keywords: video camera stream obs screenshare screensharing

Guess the year real-world photos were taken. Test your history knowledge with a daily challenge featuring a new set of photos each day.

Revision where I know there is a source link for the "maximum exposure minutes" table, a second source with skin tones, and a link to the RIVM current UV status

RIVM current UV page: https://www.rivm.nl/zonkracht/zonkrachtwijzer

Table mapping skin tone and UV level to minutes of exposure: https://cdn.weeronline.nl/RuA9ue7F0/9f153e18b158fa448925150d86d88f00/WOL_Zonkracht-2024.png

keywords: sun radiation straling verbranden burn time minuten minutes

List of radio stations worldwide, open api, open data, popularity stats, genres, etc.