The answer is not as straight forward. It depends on the type of bacteria and while freezing might kill some of them, this is not sufficient to make food safe.
Yogurt contains bacteria in chains. You can observe these when you put some fresh yogurt under the microscope. I also show you how you can make yogurt yourself. Yogurt bacteria are also a safe source for bacteria.
I collected some moss and searched for a few interesting microbes. I found a few and want to share with you my discoveries.
Here I show you how I mounted sand on a microscope slide. This might be an interesting method especially for those people who collect sand samples or those who want to investigate sand for impurities or pollution. A video for Read More …
Water Bears (Tardigrades or Moss Piglets) are animals that can withstand much stress. They can survive high and low temperatures, dryness and also lack of food. I found one of them on a piece of decaying wood, among hundreds of Read More …
Here I compare the size of different cells and also of the Coronavirus to the leg of a fly.
The resolution is determined by the objective of the microscope. For the best image quality, you should therefore use an objective with a high numerical aperture and a low eyepiece magnification.
These are microscopic worms that I found on a decaying piece of wood. In this video I show you how I isolated them and we will have a closer look into their digestive system.