The Patient Record in Epidemiology
The most accurate estimates of the rate of many diseases come from studies based on a huge collection of patient records at the Mayo Clinic. The records are indexed for retrieval by diagnosis
The most accurate estimates of the rate of many diseases come from studies based on a huge collection of patient records at the Mayo Clinic. The records are indexed for retrieval by diagnosis
Microorganisms may have flourished on tidal mud Bats 3.5 billion years ago. The environment can be reconstructed from sedimentary deposits in Australia, but the evidence of life remains tentative
Einstein's 1915 prediction that an accelerating mass should radiate energy in the form of gravitational waves is supported by evidence that a pulsar's orbit around a companion star is slowly shrinking
They are short chains of amino acids that are active in the nervous system. In some cases they transmit signals between nerve cells and also serve the body as a hormone
Modern tests of the vibrational properties of the unassembled top and back plates of a violin reveal something of what violinmakers do by "feel" and lead to the making of consistently good violins
A machine for measuring mileage that the Roman engineer described but may never have seen proved puzzling to Leonardo 1,500 years later. It may have been invented by Archimedes during the first Punic War
In the quantum theory classical patterns of inference break down. Mathematical structures called lattices can model alternative roles for the words "and" and "or" that may fit the world more coherently
When the information in an image is expressed in digital form, it can be manipulated mathematically rather than optically. By such methods a blurred photograph can sometimes be restored to clarity