99Science / Collection

Measuring the invisible

Gravitational waves and attosecond light pulses: two ways to ask what an instrument can reveal.

  1. A limit set by noise

    LIGO’s Frequency Dependent Squeezing Breaks Quantum Limits

    Gravitational-wave detection and frequency-dependent squeezing.

    ·4 min read
    ↗
  2. A limit set by time

    Nobel Prize in Physics 2023: Attosecond Pulses of Light

    Attosecond pulses and the effort to observe very fast processes.

    ·2 min read
    ↗
Keep the question open

How do we find what we cannot see? ↗