Hey, physics type people. Can anyone explain how this works? [link] It's really puzzling me. (As is the horrible ad copy, but that's another story.) I can understand how you could set a compass to always point, say, northeast, or whatever, but how do you make one always point to a particular place other than one of the poles?
That thing's just not gonna work the way they say it will. By default, a compass needle will always align with the Earth's magnetic field's force lines (is that what they're called?) By making the needle point in some other direction, the needle will then always point at a certain angle to the Earth's magnetic force lines. So you're right - it won't always point to the same point on the Earth's surface, it'll just always point, say, East or North-East or whatever....
(My knowledge would sound more impressive if I knew the correct term, huh?)
I hate 10 am meetings. For some not-me, they are the equivalent of 8 am meetings. But I'm me. And I hate them, because I am always scrambling to prepare.
And I'm not cute.
scrambles
Anyone know how much caffeine green tea has compared to black tea?
It generally has about 50% less, but caffeine levels vary greatly between different varieties of tea.
Anyone know how much caffeine green tea has compared to black tea?
Pound for pound Leaf for leaf, green tea will have more caffeine than black because it's less processed. Cup for cup is fuzzier because of different brewing methods, but Google might have some guidelines.
According to this page:
[link]
An average cup of green tea contains approximately 30 mg of caffeine. This compares to a cup of black tea, which has about 40 mg, and a cup of brewed coffee, which has 120 mg of caffeine.
But you know if all depend on how long something is steeped and the tea and the glayvin.
According to this page: [link]
Huh - just found that exact same link.
Oh, and I just noticed that my Bigelow green tea says to steep one to two minutes. I've been steeping it for about five. But OTOH I'm not using boiling water, just hot water out of a water cooler thingie.
Republic of Tea has a table.
Except that this:
The longer the tea leaves have fermented during manufacture, the greater their caffeine content.
Is really poorly worded. You can't increase a tea leaf's caffeine content by fermenting it, you can only concentrate it. Since fermenting dries out the leaves, a higher percentage of what's left is caffeine than before. But there isn't more caffeine in a fermented tea leaf than there is in an unprocessed one.
That page needs to be updated to take into account the influx of energy drinks. The market's mad right now.
