Powerful and rapidly changing magnetic fields were looking to see tiny particles of water travelling along the larger nerve fibres.

BBC: Scans reveal intricate brain wiring

Scientists hope to see new particles in the debris of these collisions that could reveal insights into the "Big Bang" and the nature of the Universe.

BBC: Particle beams injected into LHC

When he shone a light up through it, he could see fine-grained particles of silica, known as chert, mixed in with what looked like coal.

NEWYORKER: The Martian Chroniclers

To figure that out, scientists must look at how fast the boson decays into other particles, and see how the decay rate stacks up against predictions.

CNN: Scientists more certain that particle is Higgs boson

The Standard Model (see table) includes familiar particles such as electrons and photons, and esoteric ones like the W and Z bosons, which carry something called the weak nuclear force.

ECONOMIST: The Higgs boson

Gamma-ray emitters bounce atomic particles off rock formations to see the size, density and flow of oil reservoirs.

FORBES: Magazine Article

They cannot see air molecules directly, but they are able to track aerosol particles that are tossed around by the currents.

ECONOMIST: Lagrangian coherent structures

In Saturn's rings, we can see similar ordered patterns and structures assembling themselves from the chaos of the ring particles.

BBC: Saturn's beauty and power