Boy, is this a gas! Bob Greenwood gets ready to show off freezing and physics at the Ontario Science Centre Sunday
Date4/30/1985
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Original Toronto Star caption: Boy; is this a gas! Bob Greenwood gets ready to show off freezing and physics at the Ontario Science Centre Sunday. He holds a balloon dipped in firgid liquid nitrogen. As the balloons warms; it expands.
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ProvenanceFrom the Toronto Star Archives
CollectionToronto Star Photograph Archive
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Copyright HolderToronto Star (Firm)
Call Number / Accession NumberTSPA_0110329F
9/9/1969
Approximately 1912
Approximately 1925