What is uW cm2?

uW/cm2 = W/m2 / .01 (Micro-Watts per square centimeter = Watts per square meter divided by .01) nW/cm2 = W/m2 / .000,01 (Nano-Watts per square centimeter = Watts per square meter divided by .000,01. pW/cm2 = W/m2 / .000,000,01 (Pico-Watts per square centimeter = Watts per square meter divided by .000,000,01)

How do you convert mW to uW?

MW↔uW 1 MW = 1000000000000 uW.

What does mW cm2 mean?

milliwatts per centimeter squared
widely used in quantifying diagnostic instrument output and is the one most frequently quoted in biologic effects reports. The units for intensity are watts per centimeter squared (W/cm2) or milliwatts per centimeter squared (mW/cm2). Intensity can therefore be thought of as the spatial concentration of power.

How do you convert mW cm2 to MJ cm2?

Light energy at the test material surface is a measure of cumulative intensity exposure (UV light intensity x time), quantified as millijoules/cm2 and is simply: mW/cm2 x seconds = mj/cm.

How do you calculate mJ cm2?

You need to determine the power density at the target surface in milliwatts/square cm and then multiply it by the number of seconds of exposure. For example, if the power density is 10 mW/cm2 then the energy dose is 10 x 480 (number of second in 8 minutes) so the energy dose is 4,800 millijoules.

How do you convert UV index to m2?

UV-index. The UV-index is a non-dimensional unit defined as the CIE-weighted UV-irradiance (Wm-2) multiplied by the factor 40 (W-1m2).

What is ΜW cm2?

Power density is defined as power per unit area. For example, power density can be expressed in terms of milliwatts per square centimeter (mW/cm2) or microwatts per square centimeter (µW/cm2). One mW equals 0.001 watt of power, and one µW equals 0.000001 watt.

Is joules per second a watt?

Watts are defined as 1 Watt = 1 Joule per second (1W = 1 J/s) which means that 1 kW = 1000 J/s. A Watt is the amount of energy (in Joules) that an electrical device (such as a light) is burning per second that it’s running.

What does mW mean in lighting?

The mW/cm2 is the measurement of light intensity coming from the diode. The mW is the measurement of the power needed to run the diode. So, for example, let us say you are looking at a high-performance car that does 0 to 60 in 2.5 seconds.

How do you calculate cm2 from Watts?

Example: A laser’s output is 4 Watts, and it is illuminating a circle of 3 centimeter diameter. First find the area of the circle, 3.14 x 1.5 x 1.5 = 7 cm2. Then divide the power by the area, 4W / 7cm2 = 0.6 W/cm2.

What is mJ in UV?

For example, one such unit is rated at 16,000 microwatt seconds/cm2. I notice a UV dosage in your calculations or 87 mW/cm2. Most scientists and engineers in the UV business now use the units “mJ/cm2” (millijoule per square centimeter) or “J/m2” (joule per square meter) for UV dose (the correct term is “fluence”).

How do you calculate UV intensity?

How to Calculate UV-C Dose on a Surface