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A cosmic microwave background microwave background...

microwave background

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The Planck scale

On adding a cutoff

Doppler effect sweater: Blue shifted when the source approaches the observer...

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The Rabicycle: featuring Bloch sphere wheels, ground state ground, hbar handle bar, and Bell state bell

The Quantum Vacuum

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A bird-brained physicist

A snowflake under the microscope

An open quacktum system interacting with a bath

A knot related picture

...red shifted when the the source recedes away

Brownian motion