2007-07-10 08:23:24 · 3 answers · asked by farooq 1 in Science & Mathematics ➔ Physics
A watt is a Newton-meter per second. You can't convert power to energy unless you know how long the power is applied.
2007-07-10 08:33:24 · answer #1 · answered by Anonymous · 0⤊ 0⤋
You can't convert watts to nm because a watt is a unit of power and nm is a unit of energy. Power is energy per unit of time. Energy can be expressed in units of joules, where a joule is equivalent to a nm. So a watt is a nm/sec.
2007-07-10 08:34:51 · answer #2 · answered by William D 5 · 0⤊ 0⤋
There is no conversion. They are totally different units. Watts refers to power where nanometers can refers to length. Nanometers is sometimes used as a short hand for the energy of photon of light, as energy is proportional to wavelength.
Without knowing more information, how many photons/second pass by a certain location or how long this radiation hits a certain position, it is impossible to determine what you are asking.
2007-07-10 09:17:00 · answer #3 · answered by msi_cord 7 · 0⤊ 0⤋