A motley collection of ideas
Kite flying is one of those rare pleasures that works equally well for children, grandparents and everyone in between. At its simplest it is a bright toy tugging at a line in the wind; at its best it becomes a quiet lesson in balance, air, tension and patience. And with competition kites — stunt kites, … Read more
The module shown in the picture can be purchased online for around 2–3 euros. It is a small “15 kV” generator suitable, for example, for secondary-school science experiments or for use as a negative ion generator/air ionizer. The circuit can produce a stable, high-temperature, high-frequency arc, which can easily ignite small combustible materials, such as … Read more
The journey to Mars is approximately 480 million kilometers long and takes seven to eight months to complete. This raises a multitude of challenges, one of which is the provisioning of food for the crew. If we cannot carry sufficient supplies with us, is it possible to grow plants in space? How do plants develop … Read more