Visible spectrum

Newton's color circle, from Opticks of 1704, showing the colors correlated with musical notes. The spectral colors from red to violet are divided by the notes of the musical scale, starting at D. The circle completes a full octave, from D to D. Newton's circle places red, at one end of the spectrum, next to violet, at the other. This reflects the fact that non-spectral purple colors are observed when red and violet light are mixed.

Newton's observation of prismatic colors (David Brewster 1855)

Rough plot of Earth's atmospheric opacity to various wavelengths of electromagnetic radiation, including visible light

The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm. In terms of frequency, this corresponds to a band in the vicinity of 430–770 THz.

单词	Visual light
释义	Visual light 英语百科 Visible spectrum The visible spectrum is the portion of the electromagnetic spectrum that is visible to the human eye. Electromagnetic radiation in this range of wavelengths is called visible light or simply light. A typical human eye will respond to wavelengths from about 390 to 700 nm. In terms of frequency, this corresponds to a band in the vicinity of 430–770 THz.
随便看	thunder storm electricity的意思 thunderstorm electricity的意思 thunderstorm frequency的意思 Thunderstorm high的意思 thunderstorm hour的意思 thunderstorm low的意思 thunderstorm modification的意思 thunderstorm monitoring的意思 thunderstorm observing station的意思 thunderstorm rain的意思 thunderstorm rainfall的意思 thunderstorm recorder的意思 thunderstorm的意思 thunderstorm static的意思 thunderstorm turbulence的意思 Thunderstorm Warning的意思 thunderstorm wind的意思 thunderstorm with duststorm or sandstorm的意思 thunderstorm with hail的意思 thunderstormy的意思 Thunderstreak的意思 thunderstreak discharge sensitivity measurement的意思 thunderstricken的意思 thunderstrike的意思 thunderstrike的意思

Visual light

Visible spectrum