There are multiple ways to measure wavelengths however one that I can think of is: An optical flat and a precision plano convex lens of known radius to form Newton's rings.
Yes. The wavelengths of visible light are usually measured in nanometers.
A clock...
newtonmeter
A thermometer
True.
It measures the relative amounts of light of different wavelengths absorbed and transmitted by a pigment solution.
spectrophotometer
spectrophotometer
spectrophotometer
PDA - Photo diode array UV- Ultra violet with use of PDA detector, we can measure the area or height of particular peak at different wavelengths ranging from 200 to 800 nm by injecting the solution at once. Where as in uv detector we can measure the area or height of the peak only at two different wavelengths. But that wavelengths also to be selected before injecting the solution.
An instrument that uses electrical conductivity to measure the concentration of salt in a solution. Source: Answers.com
An absorption dynamometer is an instrument used to measure force, by measuring the energy absorbed via friction or electrical resistance.
A colorimeter can be used for that purpose.
spectrophotometer
There are multiple ways to measure wavelengths however one that I can think of is: An optical flat and a precision plano convex lens of known radius to form Newton's rings.
Chemists will use colorimetry to determine various states of chemicals in solution. The equipment has many uses.