This lab is an abridged Html5 version of the Flash-based Photolab. It has been optimized to work with tablet computers.

The lab allows a user to vary the light intensity and temperature conditions of an aquarium plant and observe how fast it is photosynthesizing. The number of oxygen bubbles the plant releases per minute is a measure of the rate of photosynthesis.

The rate of photosynthesis will increase with increasing light intensity. However, at high intensities the rate of photosynthesis does not increase as quickly anymore. The rate of photosynthesis is optimal at room temperaure (25 °C).  At low (10 °C) and high temperatures (40 °C) the rate of photosynthesis is not as efficient.


Rating: 4.5 - 4 votes

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This is great. I was looking for an HTML5 version of this very flash site. You don't have the light colors or carbon dioxide levels but that's no big deal. The light intercity and water temperatures are the more important ones. 


One improvement I would have (this was true for the flash version too): add a little randomness to the rate of bubbles. This way teachers can do averaging over different trails there than always 3b/5sec.


Thank you for making this.