3/4 and Kleiber's Law - Numberphile
The fraction three quarters has a particular interest to biologists because of its link to the research of Max Kleiber and metabolic rates in animals. More links ...
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THOMAS WOOLLEY: OK, so today we're going to be talking about the number 3/4, or 0.75. Unusual, I know, because it's not a whole number, like 0, 1, 2, 3, 4. But this one is very important in biology. So Max Kleiber in the 1930s posited a graph of mass of animal against metabolic rate. Down here we have the mouse, he'll have his little legs there and little ears. MALE SPEAKER: Is that a mouse? THOMAS WOOLLEY: That's a mouse. MALE SPEAKER: That's the worst mouse I've ever seen. THOMAS WOOLLEY: Wait until you see my elephant. So somewhere up here, 1,000 times heavier, you'll have an elephant. So let's try this one. MALE SPEAKER: That's not bad. THOMAS WOOLLEY: That's not bad. Well, you know, it's kind of like a big mouse, to be hon...
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THOMAS WOOLLEY: OK, so today we're going to be talking about the number 3/4, or 0.75. Unusual, I know, because it's not a whole number, like 0, 1, 2, 3, 4. But this one is very important in biology. So Max Kleiber in the 1930s posited a graph of mass of animal against metabolic rate. Down here we have the mouse, he'll have his little legs there and little ears. MALE SPEAKER: Is that a mouse? THOMAS WOOLLEY: That's a mouse. MALE SPEAKER: That's the worst mouse I've ever seen. THOMAS WOOLLEY: Wait until you see my elephant. So somewhere up here, 1,000 times heavier, you'll have an elephant. So let's try this one. MALE SPEAKER: That's not bad. THOMAS WOOLLEY: That's not bad. Well, you know, it's kind of like a big mouse, to be hon...
