DCS # | DEMONSTRATION | REFERENCE | ABSTRACT |
4B30.00 | Conduction | | |
4B30.10 | conduction - dropping balls | PIRA 500 | |
4B30.10 | conduction - dropping balls | 4B30.10 | Waxed balls drop off various metal rods connected to a heat source as the heat is conducted. |
4B30.10 | conduction of heat | Hd-1 | Waxed balls drop at different times from rods attached to a common heat source. |
4B30.11 | conduction - dropping balls | H-3a.1 | The center of a star configuration of five different metal bars is heated to melt wax at the far ends, dropping balls. |
4B30.12 | conduction - melting wax | PIRA 1000 | |
4B30.12 | thermal conductivity | Disc 14-21 | Dip rods in wax, then watch as the wax melts off. Time Lapse. |
4B30.15 | melting paraffin - sliding pointer | PIRA 500 | |
4B30.15 | sliding pointers | H-124 | Vertical rods of different metals are soldered onto the bottom of a vessel filled with boiling water. Pointers held by some paraffin slide down as the rods heat. Diagram. |
4B30.20 | painted rods | PIRA 1000 | |
4B30.20 | conduction of heat | Hd-2 | Rods of different material are coated with heat sensitive paint and attached to a common heat source. |
4B30.20 | painted rods | 26-3.3 | Steam is passed through a manifold with heat sensitive paint coated rods of different materials. |
4B30.21 | conduction bars | H-122 | Relative conductivities of bars of metals in a common copper block are indicated by match head ignition or temperature indicating paint. |
4B30.22 | iron and copper strips | 26-3.8 | Iron and copper strips are coated with "thermal color" and heated at one end. |
4B30.25 | four rods - heat conduction | PIRA 1000 | |
4B30.25 | four rods - heat conduction | 4B30.25 | |
4B30.30 | copper and stainless tubes | PIRA 1000 | |
4B30.30 | copper and stainless tubes | 4B30.30 | A contest is held between people holding copper and stainless tubes in twin acetylene torch flames. |
4B30.31 | poor thermal conduct. of stainless s | Hd-5 | Heat a stainless tube with a blow torch until it is white hot and hold close to the hot spot. |
4B30.31 | stainless rod | 26-3.4 | Heat one end of a stainless steel rod white hot while holding the other end. |
4B30.32 | iron and aluminum rods | 26-3.2 | A student holds iron and aluminum rods in a burner flame. |
4B30.35 | toilet seats | PIRA 1000 | |
4B30.35 | toilet seats | 4B30.35 | |
4B30.40 | wood and metal rod | H-129 | Wrap a paper around a rod made of alternating sections of wood and metal and hold in a flame. |
4B30.41 | high conductivity of copper | H-130 | Hold a burning cigarette on a handkerchief placed over a coin. |
4B30.42 | matches on hot plates | 26-3.1 | Matches are placed on plates of two different metals over burners. |
4B30.50 | heat propagation in a copper rod | PIRA 1000 | |
4B30.50 | heat propagation in a copper rod | 4B30.50 | |
4B30.50 | propagation in a copper rod | 26-3.7 | Solder a copper-constantan thermocouple into a copper rod and thrust the end into a flame. |
4B30.51 | spreading heatwave | 26-3.10 | An aluminum bar has a series of small mirrors mounted on small bimetallic strips to allow projection of the curve of the temperature in the bar as it is heated. Construction details in appendix, p.1287. |
4B30.52 | dropping pennies | H-123 | Pennies attached with wax will progressively drop off a bar as a Bunsen burner heats one end. |
4B30.53 | liquid crystal indicator | AJP 41(2),281 | Liquid crystal indicator from Edmund Sci. was bonded to a strip and a plate of metal and the resulting color change compared well with a computer generated model. |
4B30.53 | temperature indicating paper | H-125 | A copper bar is placed on temperature indicating paper and one end is heated. |
4B30.54 | heat transfer | Hd-6 | A solid copper rod has holes bored to pass steam and cold water from the same end. Thermometers along the rod measure the heat transfer into the water. |
4B30.56 | anisotropic conduction | H-128 | Conductivity is greater along the grain in wood and crystals. Heat the center of a thin board covered with a layer of paraffin and watch the melting pattern. |
4B30.58 | thermal vs. electrical conduction | 26-3.9 | A rod is fabricated with end sections of copper and a center section of constantan. Temperatures along the rod when heated differentially are compared with voltages along it while a potential is applied. |
4B30.59 | electrical analog of heat flow | AJP 36(2),120 | A circuit that gives the electrical analog of heat conduction. |
4B30.60 | heat conductivity of water | H-131 | Boil water in the top of a test tube while ice is held at the bottom. |
4B30.61 | heat conductivity of water | H-132 | The bulb of a hot air thermometer is placed in water and a layer of inflammable liquid is poured on top and burned. |
4B30.65 | heat conduction in gases | H-133 | Small double walled flasks are filled with ether, the jackets contain different gases. When placed in boiling water, the height of ether flames varies. |
4B30.66 | heat conductivity of CO2 | AJP 29(8),549 | Author tried using dry ice to cool break the bolt. Nothing happened. |
4B30.71 | conduction of heat in a lamp | A-61 | A carbon filament lamp is filled with different gases at various pressures and the brightness of the filament observed. |
4B30.72 | glowing tubes | 27-5.1 | Filaments in Pyrex tubes containing air, flowing hydrogen, and hydrogen at reduced pressure glow with different intensities. Picture. |
4B30.73 | double glow tube | 27-5.2 | A single length of Nichrome wire runs through two chambers allowing comparison of thermal conductivity of two gases and variation of pressure. |