How quantum imaging works with photons that never touch the object

An image can use photons that never touched the object

A quantum effect called entanglement can create an image using photons that never touched the object. Those photons are linked to another set that did touch it, allowing the image to be built from that connection.

Young sea slugs can regrow a body from the head

Young Elysia sea slugs can shed a body infected with internal parasites, then regrow a new one from the detached head. The head keeps chloroplasts—parts taken from algae—that let it use sunlight to make food and survive without its digestive system.

The Moon pulls Earth's tides more strongly than the Sun

The Sun's overall gravitational pull on Earth is much stronger than the Moon's. But tides depend on how much gravity changes across Earth, and that change is more sensitive to distance. Because the Moon is so much closer, its tidal effect is more than twice the Sun's.

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How quantum imaging works with photons that never touch the object

An image can use photons that never touched the object

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