← All parts of this equation

Equation 4 · Part 1 · God Plays Dice, and Evolution Loads Them

Symbol S

S=2.42±0.20S = 2.42 \pm 0.20
SS

What this part means

S is part of the quantity the equation computes from the expression on the right.

Its job in the formula

S is part of the quantity the equation computes from the expression on the right.

The passage around this formula

2015 closed both, three times over. Hensen and colleagues at Delft entangled electron spins in diamond, 1.3 kilometres apart, and measured S = 2.42 ±\pm 0.20 against the bound of 2, with detection efficient enough and separation wide enough to close both loopholes together [ 4 ] . Giustina and colleagues in Vienna, using entangled photons and high-efficiency detectors, reported a violation whose probability under local realism was no greater than 3.74 ×\times 10^{-31} [ 5 ] ; Shalm and colleagues at NIST, independently, reported p-values as low as 5.9 ×\times 10^{-9} [ 6 ] . Between the three, no known loophole remained.

Read this part in the article →

Learn the underlying idea

A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.

Open the illustrated variables: a letter stands for a value guide →

See this notation across published equations →

Sources cited in the surrounding passage

These citations provide research context; check each source for the exact claim it supports.