Snowflakes may not be a functional thing, but they are definitely beautiful. But instead of trying to catch them out in the wild, why not grow them yourself? In this video from SciFri, Ken Libbrecht, Caltech physicist and author of “The Secret Life of a Snowflake” tells us exactly how you can do this for only a couple of bucks! Now that’s some cool science! (Pun intended)
It is a shame that styrofoam chips, cups and other products are considered to be trash. There are so many recyclable uses for them! This was demonstrated in an earlier post “Cheap and useful styrofoam” where objects were made from styrofoam, but since this material is also sensitive to other chemicals, there are even more potential uses! In this video from GREENPOWERSCIENCE you can learn how to make thin spider webs and even wood sealant by dissolving styrofoam in natural chemicals such as citrus peel juice. Yes, the styrofoam still goes out into nature, but since it’s in a so much smaller size, the ultraviolet rays from our sun will be able to break it down much more quickly than any styrofoam cup or chip!
The siphon effect is a very interesting one. It is a normal part of your life, because every time you flush your toilet, it uses the siphoning effect. And when your gasoline powered lawnmower is out of fuel, you may resort to draining some gas from your car with a hose, again using the siphoning effect. mist8k has added to the possible uses of siphoning by making this excellent scientific demonstration. Here, the siphoning effect is used as an extremely simple on/off valve, controlled by the level of the liquid. Fill the container and nothing happens. But fill it too much and ALL the liquid will drain out, not just the excess! This solution could be a great way to make a reliable security system that dumps out all the liquids if a tank is in danger of being overfilled. No control systems required!