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Interesting presentations

An experiment with a wrong conclusion:
School text books describe a candle experiment (do you remember it from your school days?) to determine the percentage of oxygen in air. Does this experiment really measure the percentage of oxygen? View this interesting Powerpoint presentation.




One rarely understands the magnitude or significance of numbers expressed in scientific notation, like 6.02×1023. What strikes the mind is something like 6 or 10 or 23, because we are familiar with such small numbers. If you think otherwise, try for yourself! Run this presentation.


This presentation uses a funny story to illustrate the important steps in research methodology such as formulating a problem, testing hypotheses, literature survey, methods for data collection, analysis of data, discussion and conclusion, scope for further work, acknowledgements and references.


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