The Pentagon shot down an object over Alaska last Friday at the request of President Biden. A week before that, they brought down a Chinese spy balloon over the Atlantic.
One of the basic physics principles is that heat causes things to expand (get bigger) and cold causes things to contract (get smaller). Things such as air will contract and take up less room when cooled. Similarly, things will expand when they get hot.
So you want your very own hovercraft. Well once again, Geek Slop is here to help. Of course, it’s only big enough to hold a mouse (maybe two if the first one scrunches down real low) but hey, you’re not old enough for a driver’s license anyway…
Most substances have three states – solid, liquid, and gas. When they go from a solid to a gas, they usually turn into a liquid in between. Ice is a good example. It first melts into a liquid and then evaporates into a gas. Sublimation is when a chemical compound turns from a solid to…
When vinegar is mixed with baking soda, a double replacement reaction takes place. The end result is carbon dioxide but behind the scenes, there is more than one reaction taking place.
In this experiment, we will load a balloon with electrons and see how it interacts with a soda can (which is full of protons).
Youtube user hacakability has uploaded more amazing video, this time several segments showing in extreme slow motion, the falling and deformation action of water balloons. Very interesting and to be honest, quite beautiful.
A man is flying in a hot air balloon and realizes he is lost. He reduces height and spots a man down below. He lowers the balloon further and shouts: “Excuse me, can you help me? I promised my friend I would meet him half an hour ago, but I don’t know where I am.”