SLOW MOTION SCIENCE!  Ferrofluid dropping on magnet

A few tidal things that you should know... seeing as this is the time of yule "tide". In many places, there are more than two tides per day - I found this out some years ago when making a tidal prediction software and found out it wasn't working for lots of people. It's not just the moon that affects the tides. The sun does too and also to a lesser extent the planets do - we get super tides if the moon, sun, and planets are all aligned. There are two extremes of tides. Neap and spring. Spring tides occur during full moon and new moon when the moon and sun have maximum effect. Neaps happen at half moon when the moon and sun have the least effect. Spring tides have much more extream between the height of low and high tide whereas neap tides have less difference between the height of high and low tide. Bonus fact: if ever someone askes you to develop a tidal prediction algorythm, just say no!