Question: Percy Williams Bridgman experimented with what two dependents of ductility?
Context: The Logic of Modern Physics is a 1927 philosophy of science book by American physicist and Nobel laureate Percy Williams Bridgman.  The book was widely read by scholars in the social sciences, in which it had a huge influence in the 1930s and 1940s, and its major influence on the field of psychology in particular surpassed even that on methodology in physics, for which it was originally intended.  The book is notable for explicitly identifying, analyzing, and explaining operationalism for the first time, and coining the term operational definition. In materials science, ductility is a solid material's ability to deform under tensile stress; this is often characterized by the material's ability to be stretched into a wire.  Malleability, a similar property, is a material's ability to deform under compressive stress; this is often characterized by the material's ability to form a thin sheet by hammering or rolling.  Both of these mechanical properties are aspects of plasticity, the extent to which a solid material can be plastically deformed without fracture.  Also, these material properties are dependent on temperature and pressure (investigated by Percy Williams Bridgman as part of his Nobel Prize-winning work on high pressures). The Bridgman–Stockbarger technique is named after Harvard physicist Percy Williams Bridgman (1882-1961) and MIT physicist Donald C. Stockbarger (1895–1952).  The technique includes two similar but distinct methods primarily used for growing boules (single crystal ingots), but which can be used for solidifying polycrystalline ingots as well. The Chinese Repository was a periodical published in Canton between May 1832 and 1851 to inform Protestant missionaries working in Asia about the history and culture of China, of current events, and documents.  The world's first major journal of Sinology, it was the brainchild of Elijah Coleman Bridgman, the first American Protestant missionary appointed to China.  Bridgman served as its editor until he left for Shanghai in 1847, but continued to contribute articles.  James Granger Bridgman succeeded him as editor, until September 1848, when Samuel Wells Williams took charge. Percy Williams Bridgman (21 April 1882 – 20 August 1961) was an American physicist who won the 1946 Nobel Prize in Physics for his work on the physics of high pressures.  He also wrote extensively on the scientific method and on other aspects of the philosophy of science.  The Bridgman effect is named for him. Pascalization, bridgmanization, high pressure processing (HPP) or high hydrostatic pressure (HHP) processing is a method of preserving and sterilizing food, in which a product is processed under very high pressure, leading to the inactivation of certain microorganisms and enzymes in the food.  The technique was named after Blaise Pascal, a French scientist of the 17th century whose work included detailing the effects of pressure on fluids.  During pascalization, more than 50,000 pounds per square inch (340 MPa, 3.4 kbar) may be applied for around fifteen minutes, leading to the inactivation of yeast, mold, and bacteria.  Pascalization is also known as bridgmanization, named for physicist Percy Williams Bridgman. A Bridgman seal, invented by and named after Percy Williams Bridgman, can be used to seal a pressure chamber and compress its contents to high pressures (up to 40,000 MPa), without the seal leaking and releasing the pressure Mount Bridgman ( ) is a prominent mountain which surmounts the central part of Liard Island in Hanusse Bay, off the west coast of Graham Land.  It was mapped from photos obtained by the Ronne Antarctic Research Expedition (1947–48) and the Falkland Islands and Dependencies Aerial Survey Expedition (1956–57).  It was named by the UK Antarctic Place-Names Committee for Percy W. Bridgman, an American physicist who discovered the high-pressure forms of ice. In thermodynamics, Bridgman's thermodynamic equations are a basic set of thermodynamic equations, derived using a method of generating a large number of thermodynamic identities involving a number of thermodynamic quantities.  The equations are named after the American physicist Percy Williams Bridgman.  (See also the exact differential article for general differential relationships). The Percy W. Bridgman House is an historic house located at 10 Buckingham Place in Cambridge, Massachusetts.  It is a National Historic Landmark, notable for its associations with Dr. Percy Williams Bridgman, a physicist, Nobel Prize winner, and Harvard University professor.  It is now part of the Buckingham Browne & Nichols (BBN) Lower School campus.
Answer: temperature and pressure