Combined display of all available logs of UO Physics Demonstration Catalog. You can narrow down the view by selecting a log type, the username (case-sensitive), or the affected page (also case-sensitive).

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• 15:20, 14 April 2022 Physdemo talk contribs created page Comparative Heat Capacity (Created page with "{{NewDemo|subject=Thermodynamics|topic=Transfer of Heat|file1=Comparative Heat.gif}} The three metal specimens are mounted on the suport rod, then immersed in boiling water to insure they come to a uniform temperature. Specimens are then dried off and placed on a flat sheet of wax. The depth to which the metal specimens sink is a measure of the specific heat of each. '''Location: ''' * Wax: Drawer 47 *")
• 15:18, 14 April 2022 Physdemo talk contribs created page Boiling Water in a Paper Cup (Created page with "{{NewDemo|subject=Thermodynamics|topic=Transfer of Heat|file1=}} SAFETY NOTICE: This demo involves fire so you will need gloves, goggles/safety glasses, and a fire extinguisher. TIE UP lose hair and clothing. When you connect the rubber tubing make sure to connect it to GAS not AIR. Fill the paper cup COMPLETELY with water. If you do not the top will ignite. Place the water cup in the ring burner but make sure to position the cup so that the seam is placed towards the...")
• 15:17, 14 April 2022 Physdemo talk contribs created page Water Balloons (Created page with "{{NewDemo|subject=Thermodynamics|topic=Transfer of Heat|file1=}} A balloon is filled with water. The water balloon is placed over a flame and the balloon will not break since the heat is conducted away. '''Location: ''' * Balloons: Drawer 30")
• 15:17, 14 April 2022 Physdemo talk contribs created page Smoke Stack (Created page with "{{NewDemo|subject=Thermodynamics|topic=Transfer of Heat|file1=Smoke_Stack.gif}} A chamber with two chimneys on top has a candle placed inside it. The heated air flows out of the chimney above the candle, causing air to be drawn into the other chimney. Touch paper generates smoke after itis lit. When held above the cool chimney the smoke makes the convection flow visible. The flow is more visible if the chimnies are illuminated from the side by a projector. '''Location:...")
• 15:16, 14 April 2022 Physdemo talk contribs created page Crook's Radiometer (Created page with "{{NewDemo|subject=Thermodynamics|topic=Kinetic Theory|file1=Crooks_Radiometer.gif}} A sealed ball has vanes on which one side is black and the other white. When the sun or another source of bright light is directed onto the vane, it begins to rotate. '''Location: ''' * Shelf E-4")
• 15:15, 14 April 2022 Physdemo talk contribs created page Kinetic Motion Apparatus (Created page with "{{NewDemo|subject=Thermodynamics|topic=Kinetic Theory|file1=Kinetic Motion App.gif}} A container that has vibrating walls is filled with little balls of various sizes and placed on an overhead. When the walls are set into vibration a molecular motion model is observed by the students. '''Location: ''' * Shelf F-3 *")
• 15:14, 14 April 2022 Physdemo talk contribs created page Steam (Created page with "{{NewDemo|subject=Thermodynamics|topic=Entropy and the Second Law|file1=Heat_Engine--Steam.gif}} A steam Engine. '''Location: ''' * Shelf F-2")
• 15:13, 14 April 2022 Physdemo talk contribs created page Stirling Cycle (Created page with "{{NewDemo|subject=Thermodynamics|topic=Entropy and the Second Law|file1=Stirling_Cycle.gif}} Demonstrates the Stirling Cycle '''Location: ''' * Shelf F-2")
• 15:13, 14 April 2022 Physdemo talk contribs created page Thermo-Electric Converter (Created page with "{{NewDemo|subject=Thermodynamics|topic=Entropy and the Second Law|file1=Thermo Electric Converter.gif}} Two small electric motors are connected to a device which takes a thermal difference and converts it into a voltage. One engine is placed into reservoirs of boiling water and ice water which turns the propeller. The second engine is then placed into the ice water and a reservoir of liquid nitrogen and its propeller starts to turn. Demonstrates that work depends on res...")
• 15:12, 14 April 2022 Physdemo talk contribs created page Reversible Process (Created page with "{{NewDemo|subject=Thermodynamics|topic=Entropy and the Second Law|file1=Reversible_Process.gif}} A solution of Karo syrup or glycerin is between a rotating cylinder and a plexiglass container. A spot of colored syrup is placed in the apparatus. As the cylinder is turned the spot spreads out. The spot can be brought back by reversing the direction the cylinder is turned. '''Location: ''' * Shelf T-2 *")
• 15:10, 14 April 2022 Physdemo talk contribs moved page Mechanical Equiv. of Heat to Mechanical Equivalent of Heat
• 15:09, 14 April 2022 Physdemo talk contribs created page Mechanical Equiv. of Heat (Created page with "{{NewDemo|subject=Thermodynamics|topic=Heat and the First Law|file1=Mechanical_equiv_of_Heat.gif}} A copper calorimeter is attatched to a crank. A rope is wrapped around the calorimeter and attatched to a 1 kg. mass. When the crank is turned the mass is raised a few centimeters off the floor and held there by the frictional force between the rope and calorimeter. The mechanical equivalent of heat can be calculated by determining the frictional work done by the calorimet...")
• 15:08, 14 April 2022 Physdemo talk contribs created page Parabolic Thermal Reflectors (Created page with "{{NewDemo|subject=Thermodynamics|topic=Heat and the First Law|file1=Parabolic_Thermal_Reflec.gif}} Two parabolic reflectors are aligned to demonstrate heat transfer by radiation. A thermometer or the radiation sensor is placed at the focal point of one of the reflectors. At the other focal point a small amount of alcohol is burned, or an object that has been chilled in liquid nitrogen is placed. The temperature will rise or fall depending on whether the object is hot or...")
• 15:08, 14 April 2022 Physdemo talk contribs created page Cloud Maker -- Adiabatic Expansion (Created page with "{{NewDemo|subject=Thermodynamics|topic=Heat and the First Law|file1=Adiabatic_Clouds.gif}} A small amount of smoke from a burning match is introduced into the flask and the air is inside is saturated with water vapor by shaking the water inside. Pressing the bulb compresses the air in the flask, and releasing it causes expansion and cooling, forming a cloud. '''Location: ''' * Shelf T-2")
• 15:07, 14 April 2022 Physdemo talk contribs created page Tyndall's Friction Cylinder (Created page with "{{NewDemo|subject=Thermodynamics|topic=Heat and the First Law|file1=}} A metal tube is mounted on a rotator and the wooden clamp closed tightly around it. Alcohol or water is placed in the tube and the tube is corked. When the tube is spun, the heat generated by friction with the clamp heats the water until the vapor pressure shoots the cork out explosively. '''Location: ''' * Drawer 54")
• 15:06, 14 April 2022 Physdemo talk contribs created page Work done on Lead Shot (Created page with "{{NewDemo|subject=Thermodynamics|topic=Heat and the First Law|file1=Work Done On a Lead Shot.gif}} A tube filled with lead shot has a hole at one end where a thermometer can be placed. The tube is flipped repeatedly (appox. 50 times) which causes the temperature of the lead shot to rise. '''Location: ''' *")
• 14:59, 14 April 2022 Physdemo talk contribs created page Absolute Zero (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Absolute zero.jpeg}} Start by getting the foam lid on the cart to prevent spills then line up the beakers in order with the heating pot on one side and the dry ice on the other. (Remember to put just enough fluid in each container so that the Thermometer can fit submerged in each beaker). Next put on gloves before handling dry ice and add to beaker along with ethanol. Then fill the ice water with mostly ice to w...")
• 14:58, 14 April 2022 Physdemo talk contribs created page File:Absolute zero.jpeg
• 14:58, 14 April 2022 Physdemo talk contribs uploaded File:Absolute zero.jpeg
• 14:42, 14 April 2022 Physdemo talk contribs created page Ruchardt's Tube (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Tube.GIF}} This demonstration measures the ratio Cp/Cv, the ratio of specific heat at constant pressure to specific heat at constant volume. The demo consists of a tube in a rubber stopper which fits into a flask. A metal ball is dropped into the tube and oscillates. By measuring the period of the oscillations, the ratio can be determined by using the equation [missing image], where a is the radius of the ball a...")
• 14:37, 14 April 2022 Physdemo talk contribs created page Boyle's Law Apparatus (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Boyles_Law_Apparatus.gif}} A large pressure gauge is attatched to a cylinder containing hydraulic fluid. The level of the hydraulic fluid can be changed by adding compressed air into the chamber. Measurements of volume & pressure can be made to show PV = Constant. '''Location: ''' * Downstairs Labs")
• 14:37, 14 April 2022 Physdemo talk contribs created page Constant Pressure Thermometer (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Constant_P_Thermometer.gif}} A thin glass ball has a glass tube attatched to it. When the glass ball is grasped, the water level changes, causing a change in volume, keeping the pressure in the ball constant. '''Location: ''' * Shelf T-2")
• 14:36, 14 April 2022 Physdemo talk contribs created page Barometer (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Barometer.gif}} Demo description. '''Location: ''' * Part 1: Location 1 * Part 2: Location 2")
• 14:36, 14 April 2022 Physdemo talk contribs created page Manometer (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Manometer.gif}} A U-shaped glass tube has water in it. Presure differences are displayed by the water being at different levels relative to each side of the U-tube. '''Location: ''' * Shelf T-4")
• 14:35, 14 April 2022 Physdemo talk contribs created page Cold Boiling--water in a vacuum (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=}} A beaker of water is placed in a bell jar. When the jar is evacuated the water begins to boil. '''Location:'''")
• 14:34, 14 April 2022 Physdemo talk contribs created page PVT Surface--Gas (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=}} See PVT Surface --Water. This is identical, except it is for a gas. '''Location: ''' * Shelf E-1")
• 14:34, 14 April 2022 Physdemo talk contribs created page Bromine Tubes (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Bromine Tubes.gif}} Two tubes, one filled with bromine vapor and air, and the other with bromine gas and a small amount of liquid bromine. The tubes are cooled in a dry ice/alcohol bath. In the gas-air tube the bromine will solidify at the bottom of the tube. When it is removed from the cold bath, the gas will move up the tube until it is evenly dispersed. In the gas-liquid tube, the bromine will melt as the tub...")
• 14:33, 14 April 2022 Physdemo talk contribs created page Ice Melting Wire (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Ice Melting Wire.gif}} A wire with weights cuts through the block of ice. '''Location: ''' * Ice in the reading Room Fridge,or * Check with Chem Demos for full set-up")
• 14:32, 14 April 2022 Physdemo talk contribs created page Marshmallow in a Vacuum (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=}} Same as Balloon in a Vacuum but marshmallows are placed in the bell jar. The marshmallows grow as the jar is evacuated and collapse to a very small size when air is reintroduced into the bell jar. '''Location: ''' * Marshmallows: Glass Cabinet *")
• 14:32, 14 April 2022 Physdemo talk contribs created page Balloon in a Vacuum (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=}} A balloon with a small amount of air in it is placed in a bell jar connected to a vacuum pump. The balloon grows as the jar is evacuated. '''Location: ''' * Ballons: Drawer 30 * Bell jar & vacuum pump equipment: On a cart on the wall across from Shelf A")
• 14:31, 14 April 2022 Physdemo talk contribs created page Balloon in Liquid Nitrogen (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=}} A balloon is placed in liquid nitrogen. As it cools it collapses to a very small size. (Liquid air in the balloon is observable to students in the first rows.) The balloon is placed on the table and it dances around as it inflates due to the air heating up. Use caution when handling liquid nitrogen! Use gloves and goggles, and do NOT pour extra liquid nitrogen down the sink. '''Location:''' * Balloons: Draw...")
• 14:31, 14 April 2022 Physdemo talk contribs created page PVT Surface--Water (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=PVT-water.gif}} A three-dimensional PVT model of water. '''Location: ''' * Shelf E-1 *")
• 14:30, 14 April 2022 Physdemo talk contribs created page Constant Volume Thermometer (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Constant Volume Thermom.gif}} A hollow spherical ball has a pressure gauge mounted on it. Heating with boiling water and cooling with ice water causes pressure changes. Absolute zero can be extrapolated by plotting P vs. T. Location: Shelf F-4")
• 14:29, 14 April 2022 Physdemo talk contribs created page Heat Pump (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Heat_Pump.gif}} Another method of demonstrating adiabatic compression. When the pump is depressed, the temperature goes up. '''Location: ''' * Air pumps: Dr. 30 * Dial thermometer: Sh. F-4 * Loggerpro digital thermometer sensor: Sh. G-2")
• 14:25, 14 April 2022 Physdemo talk contribs created page Fire Syringe (Created page with "{{NewDemo|subject=Thermodynamics|topic=Ideal Gas Law|file1=Fire Syringe.gif}} A piston with rubber O-rings fits inside a glass tube. Cotton fibers are placed inside the glass tube. When the piston is struck sharply the adiabatic compression causes the cotton to ignite. Note: Be sure to clean and dry out the glass tube for best results. A very small amount of oil can be placed onto the O-rings to reduce friction but not too much!! '''Location: ''' * Drawer 51 *")
• 14:09, 14 April 2022 Physdemo talk contribs created page Film Loops--Therm. Prop. of Matt. (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=}} {| class="wikitable" |- ! Film Loop !! Location |- |Boiling Point and Pressure||32 |- |Boyle's Law||34 |- |Conservation of Mass||29 |- |Critical Temperature||27 |- |Crystal Growth||35 |- |Drops and Splashes||33 |- |Finding Absolute Zero||31 |- |Gas Diffusion Rates||30 |- |Random Walk and Brownian Motion||28 |- |Thermal Expansion of Gases||30.5 |- |Temperature, Energy and Thermal Equilibrium||12...")
• 14:02, 14 April 2022 Physdemo talk contribs created page Green House Effect (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Green_House_Effect.gif}} A box consisting of two chambers separated by a thermal insulator. One chamber contains a beaker filled with colored water. A bright light shined above heats up the box. Chamber with the thermal mass (water) heats up slower than the other chamber. Likewise, it cools down slower than the other chamber when the heat source is removed. '''Location: ''' * Shelf F-2")
• 14:00, 14 April 2022 Physdemo talk contribs moved page Peltier App. -- super cooled water to Peltier Apparatus
• 14:00, 14 April 2022 Physdemo talk contribs created page Peltier App. -- super cooled water (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Peltier Apparatus.gif}} The Peltier Apparatus, a solid state device also known as a frigidster, gets hot on one side and cool on the other when a current is run through it. The Peltier Apparatus is used to cool down a small sample of water placed in a test tube. A thermometer is submerged in the water. Power is applied and the temperature decreases. The temperature will dip below 0 degrees Celcius...")
• 13:59, 14 April 2022 Physdemo talk contribs created page Triple Point (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Triple_Point.gif}} A small amount of water sits on a watch glass. The watch glass is placed on top of a specially cut pyrex beaker that contains a small amount of sulfuric acid to absorb water vapor. The set-up is placed inside a plexiglass vacuum chamber. The entire apparatus is placed on an overhead. When the vacuum pump is activated, the water boils. The boiling continues for a few minutes unti...")
• 13:59, 14 April 2022 Physdemo talk contribs created page Relative Humidity App. (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Relativity_Humidity_App.gif}} Dampen this thermometer, then spin the apparatus a number of times. Read the different temps and compare to the humidity chart. '''Location: ''' * Drawer 60")
• 13:58, 14 April 2022 Physdemo talk contribs created page Frozen Rose, Rubber Tubing (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=}} Fun & dramatic changes to objects by placing them in liquid nitrogen. A rose shatters like glass. A rubber tubing shatters. When the tubing is placed in the liquid Nitrogen, a fountain of liqid nitrogen flows out the top. Please handle liquid nitrogen safely, using goggles and gloves. Do NOT dispose of liquid nitrogen in sinks. '''Location: ''' * Liquid Nitrogen Container: Shelf E-2 * Rubber t...")
• 13:58, 14 April 2022 Physdemo talk contribs created page Thermal Linear Expansion (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Thermal Expansion.gif}} A rod is fixed on one end and the other is placed on a rotating needle. The bar is heated with a bunsen burner and the needle will move slowly. After the bar is heated, it can be cooled rapidly by pouring cold water along the rod which causes the needleto move quickly to its original reading. '''Location: ''' * Shelf E-4")
• 13:57, 14 April 2022 Physdemo talk contribs created page Ice Bomb (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Ice Bomb.gif}} A cast iron vessel is filled with water and sealed with a screw plug. The vessel is placed in a dry ice + alcohol solution. When the water freezes inside the vessel it causes the vessel to "explode." (Note: Place vessel behind a blast shield or inside t he pressure cooker pot. '''Location: ''' * Shelf E-4")
• 13:56, 14 April 2022 Physdemo talk contribs created page Nitinol Wire (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Nitinol_Wire.gif}} A piece of wire that, when heated, straightens out but when cooled retains its original shape. Can also be "trained" by shaping it within a flame to return to a shape other than straight. '''Location: ''' * Drawer 53 *")
• 13:55, 14 April 2022 Physdemo talk contribs created page Bimetallic Strip (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Bimetallic Strip.gif}} The strip consists of two different strips of metal sandwiched together. When heated, the metals expand at different rates, so the strip bends. '''Location: ''' * Drawer 52")
• 13:53, 14 April 2022 Physdemo talk contribs created page Ball and Ring (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Ball and Ring.gif}} When both pieces are cool, the ball will not fit through the ring. When the ring is heated, it expands, and the ball will fit through it. Location: Drawer 52")
• 13:49, 14 April 2022 Physdemo talk contribs moved page Tyndall's Bar Breaker to Tyndall's Ball Breaker (lol)
• 13:47, 14 April 2022 Physdemo talk contribs created page Tyndall's Bar Breaker (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Tyndalls Bar Breaker.gif}} The rod in the middle of the apparatus is heated, causing it to expand. The nut at one end is tightened during the heating, so it is tightly fastened in its expanded state. When removed from the flame, the rod contracts as it cools, eventually breaking the iron bar located at the opposite end of the rod. '''Location: ''' * Drawer 52")
• 13:45, 14 April 2022 Physdemo talk contribs created page Alcohol Heat Fountain (Created page with "{{NewDemo|subject=Thermodynamics|topic=Thermal Properties of Matter|file1=Alcohol Fountain.jpeg}} When the fountain is held in the palm of the hand, it is warmer at the bottom, causing a pressure difference, so the alcohol/freon creeps up to the top. '''Location:''' * Drawer 56")

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