A wintery post of ephemeral images.
Snowflakes are made from up to 200 snowcrystals, which form around nucleation points (specs of dirt or pollen). For crystals to form around this nucleus the temperature has to be -35°C or below. The shape a snowcrystal takes is dependant on the temperature at which it forms, and may be up to 4mm in diameter.
Wilson A. Bentley was the first person to photograph a snowflake in 1885, using trial, error and an adapted microscope and mutated bellows camera.
Some of the first ever photographs of snowcrystals
Wilson Bentley, circa 1902.
These are some of the latest, taken in Dec 2008 by Mark Cassino
And using a scanning electron microscope for a different perspective.
Each image zooms into the white square of the previous image…
…and a few more SEM images…
Hexagonal plate with dendritic extensions
Hexagonal snow crystal
Rimmed hexagonal snow crystal
Stellar snow crystal
Snow after several days in snowpack
Image showing the differences between a conventional microscope, using photons (light) and a scanning electron microscope, using electrons, which renders everything opaque as it can’t see reflections or transparency.
Happy Christmas everyone**