DescriptionDangerous spot. Washington, D.C., Dec. 18. Dr. L.H. Adams, Director of the Geological Laboratory of the Carnegie Institution, is standing in what might be a dangerous position should the LCCN2016872760.jpg
English: Title: Dangerous spot. Washington, D.C., Dec. 18. Dr. L.H. Adams, Director of the Geological Laboratory of the Carnegie Institution, is standing in what might be a dangerous position should the little steel drum in the cabinet [next to] him explode. In this apparatus the scientists study the behavior and properties of artificial rock under tremendous pressure, a pressure greater than that generated in the breech of the cannon. From these studies is learned something of the behavior of rocks at great depths, 12/18/37
Abstract/medium: 1 negative : glass ; 4 x 5 in. or smaller
This work is in the public domain in the United States because it was
published in the United States between 1929 and 1977, inclusive, without a
copyright notice. For further explanation, see
Commons:Hirtle chart as well as a
detailed definition of "publication" for public art. Note that it may still be copyrighted in jurisdictions that do not apply the
rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50
p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.
DescriptionDangerous spot. Washington, D.C., Dec. 18. Dr. L.H. Adams, Director of the Geological Laboratory of the Carnegie Institution, is standing in what might be a dangerous position should the LCCN2016872760.jpg
English: Title: Dangerous spot. Washington, D.C., Dec. 18. Dr. L.H. Adams, Director of the Geological Laboratory of the Carnegie Institution, is standing in what might be a dangerous position should the little steel drum in the cabinet [next to] him explode. In this apparatus the scientists study the behavior and properties of artificial rock under tremendous pressure, a pressure greater than that generated in the breech of the cannon. From these studies is learned something of the behavior of rocks at great depths, 12/18/37
Abstract/medium: 1 negative : glass ; 4 x 5 in. or smaller
This work is in the public domain in the United States because it was
published in the United States between 1929 and 1977, inclusive, without a
copyright notice. For further explanation, see
Commons:Hirtle chart as well as a
detailed definition of "publication" for public art. Note that it may still be copyrighted in jurisdictions that do not apply the
rule of the shorter term for US works (depending on the date of the author's death), such as Canada (50
p.m.a.), Mainland China (50 p.m.a., not Hong Kong or Macao), Germany (70 p.m.a.), Mexico (100 p.m.a.), Switzerland (70 p.m.a.), and other countries with individual treaties.