I'm sure there are lots of people on GAF who are experts, experienced, or at least knowledgeable about a thing or two that may not be common knowledge.
This is your chance to teach the me/rest of us something cool that you know about. This can be from your education, your job, your hobbies, or whatever. It can be how to make the perfect pancake, a grammar mistake people don't think about, something about a historical figure, "life-hacks", or a science concept for example. It can be simple or complicated.
I like learning, and I've learned some cool stuff, but none of us can learn everything so let's share our knowledge!
I'll start off with a couple of things.
This is your chance to teach the me/rest of us something cool that you know about. This can be from your education, your job, your hobbies, or whatever. It can be how to make the perfect pancake, a grammar mistake people don't think about, something about a historical figure, "life-hacks", or a science concept for example. It can be simple or complicated.
I like learning, and I've learned some cool stuff, but none of us can learn everything so let's share our knowledge!
I'll start off with a couple of things.
Bananas and apples are not "fresh" at the store
Apples are usually months old by the time you buy it at the fruit stand. Bananas are also old. They keep them in humidity-controlled refrigerators and often spray a ripening agent on the bananas right before they put them out at the stand in the grocery store (maybe that's why they go bad so quickly?).
A liquid can boil and freeze at the same time
Matter changes state (liquid, solid, gas) when it reaches the right combination of temperature and pressure. Water, for example, for atmospheric pressure (1 atm), boils at 100 degrees Celsius and freezes at 0 degrees Celsius. We know this. Change the pressure, and the necessary temperatures for this to occur changes as well. That's why things boil at different temperatures if you live at higher altitudes.
Well, there is a sweet spot combination of temperature and pressure that can cause a pure substance to boil and freeze at the same time. For this temperature and pressure combination, called the triple point, the matter prefers to coexist in liquid, solid, and gas states all at once!
The sky is not that blue.
Oxygen and Nitrogen make up most of our atmosphere, and they like to scatter the white light from the sun. Higher energy light is scattered more, and that's why the sky is normally blue as opposed to red. It's actually more violet than it is blue, however, it's ultraviolet and we can't see that.
