'Eua
Thursday, October 30, 2025
Wednesday, October 29, 2025
Tuesday, October 28, 2025
Monday, October 27, 2025
Light
The electromagnetic spectrum, with the visible portion highlighted. The bottom graph (Visible spectrum) is wavelength in units of nanometres (nm).
Sunday, October 26, 2025
Energy
A plasma globe using electrical energy to create plasma, light, heat, movement, and a faint sound
Thursday, October 23, 2025
Tuesday, October 21, 2025
Spain
Trilingual billboard in Barcelona (detail), showing the initial exclamation mark for Spanish, but not for Catalan (top line) and English
Monday, October 20, 2025
Sunday, October 19, 2025
Saturday, October 18, 2025
Friday, October 17, 2025
Thursday, October 16, 2025
Wednesday, October 15, 2025
Monday, October 13, 2025
Saturday, October 11, 2025
Friday, October 10, 2025
Thursday, October 9, 2025
Saturday, October 4, 2025
Friday, October 3, 2025
Thursday, October 2, 2025
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