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Iypt 2011 Problem 13: Light Bulb
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kustura, Katja |
| Copyright Year | 2011 |
| Abstract | Determining efficiency of a light bulb is a very useful task, since light bulb is a very present and widely used object in everyday life. This was our task in this year’s IYPT problem ‐ the goal was to determine the ratio between the thermal energy and the light energy emitted from a small electric bulb depending on the voltage applied to the bulb. Our first and main plan was to distinguish useful part of emitted energy (light) from the energy losses (heat). We approached this problem in two different ways. First, calorimetric method was used to experimentally separate light and thermal energy and to determine the ratio. Besides this method, theoretical method was proposed and developed, by using Planck’s law of radiation and approximating the light bulb as a grey body. The light bulb |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://archive.iypt.org/iypt_book/2011_13_Light_bulb_Croatia_KK_v2.pdf |
| Alternate Webpage(s) | http://archive.iypt.org/iypt_book/2011_13_Light_bulb_Croatia_KK_v3.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
