Awhile ago my fellow during one of our weekly LabChats the topic of conversation we discussed the possibility of using an air cannon as the first stage of a model rocket. Here's a video from a creator who is exploring that possibility. He's using microcontroller to determine when the vehicle reachers the highest point in it trajectory. I think we could do much better, but I'd like to share this and see what everyone thinks. Enjoy!

https://get-syngas.com/article/us/?uid=459&oid=19&affid2=593&sub1=6a05c4152b65644bb0072d8d&transaction_id=9024d4e302fa41a683a21de172306cfe#tblciGiCRWbyHZqC70KteHQrQyilYV5DnJt11OwGYq7aCCYhI5yDp1Hgos5nVmOT9pu9wMOqPdQ

(PDF) Space Weather Impact on GNSS Performance

This is by far the clearest explanation I've ever seen on the nature and benefits of cycloidal drives. These are far superior for many applications, especially in robotics, where you need high torque delivered at relatively low RMPs. If you have any interest in building things that move, you've got watch this video. Enjoy

Nuclear power has a political problem, the fear of meltdown leading to a large release of radiation. One way that companies have been seeking to move forward in this sphere is to develop reactors that never reach criticality. Instead of using a chain reaction, they use a fuel that isn't dense enough to sustain a chain reaction. To release energy, they bombard a fuel stack with neutrons that they create using a conventional neutron source, such as a proton accelerator that launches high energy protons into heavy nuclei. That shatters the nuclei and release a pulse of neutrons in the process. These neutrons can then be used to create excess (more than the energy required to create the neutrons) energy. They can't produce much energy compared to standard fission reactors--only tens of megawatts. But they might be sufficient to power data centers and other stand alone power sinks. In this video, Sabine Hossenfelder summarizes the current state of the art. Enjoy