theremin hands control pitch volume antennas

A theremin is played without touch

A theremin’s antennas sense how close the player’s hands are. The player’s hand movements control the instrument’s pitch and volume without physical contact.

Norovirus can infect someone with an extraordinarily small dose

Norovirus spreads easily through contaminated food, water, surfaces and close contact. Experiments and outbreak investigations suggest that very small numbers of infectious particles can sometimes establish an infection. That helps explain why the virus spreads rapidly in places such as cruise ships, schools and care homes.

Peer review does not prove a claim true

Peer review means specialists judged a study worth publishing; it does not prove its claims are true. Confidence can grow when later research supports a claim and other researchers successfully build on it, but scientific conclusions can still change.

Like this? There’s a whole feed of it. Replace empty scrolling with things worth knowing.

Download Hence for free

theremin hands control pitch volume antennas

A theremin is played without touch

Discover something new