Name Marco Von Ballmoos
Member since
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Home page http://earthli.com/users/marco

The (only) developer at earthli.com.


2493 Articles

3 weeks Ago

Radio vs. Sound Waves

Published on in Science & Nature

I played Kahoot[1] the other day with the family. The quizzes are pretty wide-ranging and pretty decent fun, especially for a mix of ages. One of the quizzes concerned sound and electromagnetic waves and I tried to explain why one of the answers was incorrect “in the moment”, as it were. Concerned that my explanation had engendered rather than answered questions, I take another crack at it below.

Radio vs. Sound Waves

I was thinking again about how you didn’t seem to convinced by my fumbling... [More]

1 month Ago

Scifi and Fantasy Recommendations (for a younger reader)

Published on in Books

I recently learned that a young reader I know is a fan of The City of Ember (Wikipedia), which is a science-fiction novel “[…] about Ember, a post-apocalyptic underground city threatened by aging infrastructure and corruption.” I heard she’d received the The People of Sparks (Wikipedia) as a gift and was intrigued to learn that she was reading books deemed “science fiction”.

I dug back through my own lists of recent years to find the following recommendations for (more or less) age- and reading-level appropriate... [More]