Various Foldscope Samples

Edge of coriander leaf. The green part of the image is the leaf. Coriander (coriandrum sativum) leaf obtained at 4:32pm on 30/05/19 in Ricketts House at Caltech by plucking from the plant pictured above. 2. Strand of human hair. Under magnification, the cylindrical shape and dark colour of the hair is clearly visible. The sample…

Jacaranda Pollen Sample

The image shows a sample of pollen from a jacaranda flower collected in Ricketts House on the Caltech campus in Pasadena, California, at 5:20pm on May 10th 2019. The pollen appears like small white spots in the image, and the dark spots are dirt on the Foldscope lens (identified as they did not move when…

Sample from Caltech Turtle Pond

The image shows a Foldscope image of water from the Caltech turtle pond. The sample was obtained on Tuesday 9th April by recitation TAs. Question: Does the image show organisms on the slide, or dirt or other matter on the lens?Approach: Check if the spots are moving, or move the slide and see if they…