a neutral substance
82Watercolor painting — For other uses, see Watercolors (disambiguation). An artist working on a watercolor using a round brush Watercolor (US) or watercolour (UK and Commonwealth), also aquarelle from French, is a painting method. A watercolor is the …
83Glossary of environmental science — This is a glossary of environmental science.Environmental science is the study of interactions among physical, chemical, and biological components of the environment. Environmental science provides an integrated, quantitative, and… …
84electromagnetism — /i lek troh mag ni tiz euhm/, n. 1. the phenomena associated with electric and magnetic fields and their interactions with each other and with electric charges and currents. 2. Also, electromagnetics. the science that deals with these phenomena.… …
85Character mask — Part of a series on Marxism …
86pH — For other uses, see PH (disambiguation). Acids and Bases Acid dissociation constant Acid base extraction Acid–base reaction Acid–base titration Dissociation c …
87Acid dissociation constant — Acetic acid, a weak acid, donates a proton (hydrogen ion, high …
88List of philosophy topics (R-Z) — RRaRabad Rabbinic law Rabbinic theology Francois Rabelais François Rabelais race racetrack paradox racism Gustav Radbruch Janet Radcliffe Richards Sarvepalli Radhakrishnan radical Aristotelianism radical behaviourism radical feminism radical… …
89List of Star Trek regions of space — Several films and episodes of the science fiction franchise Star Trek were set in distinct regions of space. Some of these fictional locations exhibited anomalous physical properties. Others were defined as sensitive buffer zones under political… …
90international relations — a branch of political science dealing with the relations between nations. [1970 75] * * * Study of the relations of states with each other and with international organizations and certain subnational entities (e.g., bureaucracies and political… …
