Background I have a Celestron NexStar SLT 127 telescope. For those who don’t know, it’s a battery-powered telescope which has a small computer to navigate around the skies and steer the telescope. It’s quite hungry for power – the telescope takes 8 AA batteries. Depending on the type of batteries you use and the temperature, […]Read more "Making a battery box for my Celestron telescope"
Everyone knows that Coke is bad for their teeth. It’s sugary and acidic. The acidity is at least partially caused by carbon dioxide (CO2) dissolved in the water, to make carbonic acid. We also know that if you pour a Coke and leave it, it fizzes away as the CO2 comes out of solution and […]Read more "Is Coke worse for your teeth when fizzy or flat?"