Both water and glass will produce direct reflections. Fortunately they are transparent. To avoid direct reflection, a diffused light source is placed behind the transparent material.
![](https://openlab.citytech.cuny.edu/pelkacomd1340d088fall2022/files/2022/12/Vlad-S-1-683x1024.jpg)
Working in groups with the strobe light from behind:
- one student pours water, one
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