1722-1794 1853-1900 20thcentury abstractexpressionism american americanpaintingsabstractexpressionism censorship cheshire criticalstudies da690 electricity essexfoulness exhibitions fluidmechanics fluidsmechanicsresearch grigoriisaavich history hryhoriĭsavych intellectuallife magnetics magnetism painting russianculture skovoroda soloviev solovyov sovietunion unitedstates vladimirsergeevich vladimirsergeyevich