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demonstrations:4_thermodynamics:4a_thermal_properties_of_matter:sagging_wire:start
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demonstrations:4_thermodynamics:4a_thermal_properties_of_matter:sagging_wire:start [2019/02/14 23:33] 127.0.0.1 external edit |
demonstrations:4_thermodynamics:4a_thermal_properties_of_matter:sagging_wire:start [2019/04/26 22:46] (current) demoroom |
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| ====== Sagging Wire ====== | ====== Sagging Wire ====== | ||
| - | {{tag> needs_review untagged unlocated}} | + | {{tag> lost thermodynamics thermal_expansion joule_heating unlocated}} |
| <WRAP box right> | <WRAP box right> | ||
| Line 12: | Line 12: | ||
| Displays current-created heat and its thermal effect on a wire | Displays current-created heat and its thermal effect on a wire | ||
| - | |||
| Current flow | Current flow | ||
| Power from electricity (P = V*V/R) | Power from electricity (P = V*V/R) | ||
| Heat expansion | Heat expansion | ||
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| - | |||
| - | |||
| - | |||
| ===== Purpose ===== | ===== Purpose ===== | ||
| Line 32: | Line 27: | ||
| - | - Nickel wire (currently missing) | + | * Nickel wire (currently missing) |
| - | - 200g weight | + | * 200g weight |
| - | - Power supply with two leads | + | * Power supply with two leads |
| - | - Two stands | + | * Two stands |
| Line 42: | Line 37: | ||
| - | 1. Tie the nickel wire between the two stands at a considerable distance (The longer the distance, the more sagging will occur | + | - Tie the nickel wire between the two stands at a considerable distance (The longer the distance, the more sagging will occur |
| - | 2. Place the weight in the center of the span | + | - Place the weight in the center of the span |
| - | 3. Attach the alligator clips of the leads to the ends of the wire | + | - Attach the alligator clips of the leads to the ends of the wire |
| - | 4. Flick the power supply switch to 12 volts and turn the knob clockwise to its maximum | + | - Flick the power supply switch to 12 volts and turn the knob clockwise to its maximum |
| - | 5. The wire will start sagging to a maximum point | + | - The wire will start sagging to a maximum point |
| - | 6. Turn the power off and the wire will return to its original position | + | - Turn the power off and the wire will return to its original position |
| ===== Notes ===== | ===== Notes ===== | ||
demonstrations/4_thermodynamics/4a_thermal_properties_of_matter/sagging_wire/start.1550187203.txt.gz · Last modified: 2019/02/14 23:33 by 127.0.0.1
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