How do you build a ‘selfie’ that captures the moment without any electronics?

Electronic gadgets have long been an important part of our lives, and we spend an increasing amount of time using them.Today, it is easy to forget that our smartphones and tablets do not come with any sort of integrated camera, camera lens or other gadgetry that might be used to take a picture.But if you’re …

How to build a cheap electron microscope with a few components

The electron microscope is a simple device that can look at a chemical reaction that has taken place in a chemical medium, and see it on a chip.But, it has many limitations, including a limited number of detector elements and an expensive, high-power source of power.So, for many people, building a cheap, high quality, low-power, …