A daily crossword puzzle for watchmaking terms.
A poster featuring the 2D structure of the diborane molecule.
A poster featuring the phonetic transcription of "theory" in the International Phonetic Alphabet (IPA).
A pronunciation dictionary of the Ukrainian language with IPA transcriptions.
A pronunciation guide for the names of neuroscientists.
The definition of the Hadamard gate and some of its properties.
Test your knowledge of the world's capital cities with this quiz.
Inspecting the ontology of Wikidata.
Discover a new Portuguese word every day.
All prices listed are in United States Dollars (USD). Visual representations of products are intended for illustrative purposes. Actual products may exhibit variations in color, texture, or other characteristics inherent to the manufacturing process. The products' design and underlying technology are protected by applicable intellectual property laws. Unauthorized reproduction or distribution is prohibited.