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 Too many moral philosophers and commentators on moral philosophyhavebeen content to invent their psychology or anthropology from scratchSDarwallAGibb. “The most incomprehensible thing about the world is that it is comprehensible.”. – . Albert Einstein. Day. 18, 3/31:. . Questions? . Electron Diffraction. Wave packets and uncertainty. Next Week:. Axion Dark Matter. Georg G. . Raffelt. , Max-Planck-. Institut. f. ür Physik, . München. Physics Colloquium, University of Sydney, 3 March 2014. Axions. as Cold Dark Matter of the Universe. Dark . and Density. Stating a Measurement. In every measurement there is a. Number . followed by a . Unit . from a measuring . device. International System of Units (SI). adopted in 1960. seven base units which all others can be derived. Matter. Anything that has a mass and takes up a volume. Air, water, you, me, the desk, the door, the floor, the sky, the earth.. Hypothesis . vs. theory . vs. law. Hypothesis. A statement that is yet to be tested. Ron-Chou Hsieh. CYCU. Outline. It seems to have something there!. What are they?. Link with physics beyond the SM.. DM searches.. Constructing a DM model. Summary. It seems to have something there!. Galactic rotation curves:. What is the Matter?. Stuff of which all materials are made out of. Anything that has mass and takes up space. .. WHY ARE WE CONCERNED WITH MATTER??. Chemistry is the science concerned with the properties, composition, and behaviour of matter!. EQ: How are changes in matter related to changes . in energy?. Changes in Matter. You are at the beach. You built a sandcastle!. You notice storm clouds gathering in the distance.. You are sad : (. You know your sandcastle is about to go bye-bye.. Matter. All matter has two types of properties: . Physical properties . Chemical properties. Physical properties. A . physical property . is a characteristic of a substance that can be observed without changing the substance into another substance.. TEK 5.5 A – Students will classify matter based on physical properties…. Matter. Matter. is any living or non-living thing in the universe. All objects, things, plants, people, animals, etc are made up of matter. Matter . is anything that has mass and takes up space. . Ex: air, plastic, wood, water, cloth…. . Matter has 2 kinds of properties:. . 1. . Physical. – . oxygen is a gas at room temperature; water . Classifying Matter by Composition. Homogeneous. – . matter with a uniform composition. Heterogeneous. - . matter without a uniform composition. Substance. - A pure type of matter that does not vary from sample to sample. Includes . 6 Beta 2014. Measuring Matter. Which weighs more, a pound of feathers or a pound of sand?. They both weigh the same, 1 pound.. Measuring Matter. Weight. Is a measure of the force of gravity on you. Mass. Describing Matter. Extensive Properties: depend on amount of matter in a sample. Mass: amount of matter. Volume: space occupied. Intensive Properties: depend on type of matter, not amount. Density: mass/volume. Matter and Energy What is matter? Matter and Energy What is matter? It's what everything that occupies space and has mass is made of And everything like that is made out of chemical elements There are 92 naturally occurring chemical elements, and a number of synthetic ones