A Camera-shy Tardigrade!

My first tardigrade – and a surprise at that. I looked into my Foldscope, and, without panning or focusing, the first thing that I saw was a slightly blurred, but recognisable little creature! Yesterday I scraped off some lichens from two trees on my street. I think they were the same kind of lichens; they…

Is your mask really safe?

I have observed six different types of face masks being used in India during the COVID-19 pandemic under my Foldscope. Depending on the size of the spaces between the fibres of the masks, I’ve analysed the ability of each mask to protect the wearer, and those around the wearer. Blue Disposable Mask A regular, single-use…

Comparative study of device screens

This is an analysis of a phone screen, a laptop screen, and a TV screen. Pixels are visible in three colours – red, blue and green – in all the screens, but the pixels of each screen differ in shape and size. There are variations in the pixel densities. Based on the pixel density, the…

A pool of life!

I noticed a green layer (presumably algae) growing on the terracotta pots on my terrace. All the pots have greenish growth on them, but they all look very different. One pot had a layer which was considerably thicker, and easy to scrape off. I soaked bits of it in regular tap water and let it…

Stomata and Guard Cells

I have observed the outer epidermis of a leaf and the skin of a pea pod under my Foldscope. The samples were taken at different times of the day, and we can see both closed and open stomata, depending on when they were taken. Closed Stomata This is a leaf peel from a rhoeo (Tradescantia…

Onion Cells

An onion peel is typically one of the first samples viewed when introduced to school-level microscopy. Here are images of an onion skin under my Foldscope. The cells are seen very distinctly and have a three-dimensional appearance. CookerBird