Per Jonsson's Page

Here's an idea that came to me last night:



So I was lying in my bed, waiting to fall asleep when I heard a small high pitch noise. I lay still a moment before I determined that it wasn't my tinnitus acting up. So I went up and tried to find the source of the sound. It didn't take long before I discovered what made the barely audible screech. It was my cell phone recharger. Apparently I had accidentally left it in the socket when my phone was fully charged, the electricity running… Continue

Okay so I had this thought. The winds that travel in between skyscrapers in big cities much reach colossal speeds, these winds could be used to generate energy. So why not install wind turbines in big cities? Here's a small render I made:

Simple enough? Well here are some problems:

Noise; from what I've heard wind turbines… Continue

Has anyone thought about generating energy through keyboard strokes using the same method as energy from floor tiles? Under each key a small piece of metal could be built in and electricity could be gained from the deformation of the metal following a key stroke. Though this energy would be minuscule, a small contribution could be made if we pool all of the worlds keyboards. Imagine how many times a keyboard key gets pressed every day in the world. Let's do a Fermi calculation:



Roughly… Continue

Here's a very quick Photoshop image I made as a concept design. It's basically quite a simple idea: using the extra space on rooftops to grow vegetables. What better way of increasing our food security than start growing our own crops. If low energy heating systems are installed the greenhouse could work during the cold seasons as well, if the vegetables grown can grow at cold temperatures such as 10 degrees Celsius. …

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