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  • Description

    Story about various types of frosts.

    First are the tiny frost crystals of "hydrochloric acid". A drop of the acid is placed on a piece of glass. A drop of ammonia is added. Smoke emerges from the drop and crystallising takes place. The glass slide is placed under the microscope. We see the crystals growing (may be time lapse photography). They make fern-like shapes. We see more crystals growing.

    Salt crystals are shown growing under the microscope. Sodium Sulphide crystals are next. The famous "pyramid" crystals of sodium carbonate are shown.

    Was an item in Pathe Pictorial issue number 648.

  • Tags

  • Data

    Archive
    British Pathé
    Issue Date:
    01/09/1930
    Sound:
    Mute
    Media URN:
    15280
    HD Format:
    Available on request
    Film ID:
    904.04
    Stock:
    Black & White
    Duration
    00:03:34:00
    Time in/Out:
    01:10:51:00 / 01:14:25:00
    Canister:
    EP 156
    Sort Number:
    EP 156
  • Appears in...

    WorkSpaces
    Chemistry Scientific Disciplines Window
  • Stills

    0:01 0:02 0:03 0:04

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