Safari Live - Day 337 | National Geographic

Acetic acid is an example of a weak acid, and sodium hydroxide is an example of a strong base. If we are titrating a sample of acetic acid with sodium hydroxide, acetic acid would be the analyte, the substance that we are analyzing, and sodium hydroxide w…

Uh, why don’t flames have shadows? Like, I mean, hello, it’s kind of freaky. But it has everything to do with what a hydrocarbon flame is. When you look at a candle flame, the part you can see is not a gas, and it’s not a plasma, believe it or not. The p…

[Music] People are surprised about what lies beneath London, especially when they find human remains. The Liverpool Street Station is one of the most important for archaeology because we’re right in the heart of the ancient city here. The cemetery was in …

So, let’s talk a little bit about abiotic factors for an organism’s range. Before we even get into it, let’s just think about what these words mean. In other videos, we’ve talked about how abiotic means non-living, while biotic would refer to living. So, …

I told you not to sell. I worry about it. A good.com. Do you happen to own index funds in your portfolio? Maybe SPY from State Street or VO from Vanguard or IVV from Black Rock? All these ETFs track the S&P 500, which is an index composed of the large…

Where is the darkest part of a shadow? I mean, the obvious answer seems to be right in the middle. If you look closely at a shadow, as you move the object away from the wall, you notice that the shadow gets a bit fuzzy. So clearly, the edges are lighter. …