This short film highlights two different methods to investigate the effect of light intensity on the rate of photosynthesis, one using pondweed and an alternative method using algal balls.

A similar method described on the previous ... Starch is produced from glucose made during photosynthesis. Areas of the leaf exposed to the light should turn blue–black when iodine is added ...

The team's method improves the precision of measuring ... is essential to correctly measuring the direction and intensity of the light they emit. "Likewise, biomolecules aren't spheres, so by ...