The design and shape of the Dewar flask was used as a model for optical experiments based on the idea that the shape of the two compartments with the space in between is similar to the way the light hits the eye.
22.
However, the Dewar flasks the LOX was stored in occasionally exploded, which was caused by iron impurities in the activated carbon serving as trace gas absorbent in the insulation vacuum layer in the flask, which caused spontaneous ignition in case of LOX leak into the enclosed space.
