What does mW cm2 measure?
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.
What is the intensity of UV light?
The intensity of UV radiation is measured in the units of milliwatts per square centimeter (mW/cm2) which is energy per square centimeter received per second. Also, it is measured in the units of millijoules per square centimeter (mJ/cm2), which is energy received per unit area in a given time.
How do you calculate UV light?
UV Dose = UV Intensity (µW/cm2) x Exposure Time (seconds)
What does uW cm2 mean?
Micro-Watts per square centimeter
uW/cm2 = W/m2 / .01 (Micro-Watts per square centimeter = Watts per square meter divided by .01)
Which type of UV radiation is most harmful?
UVC
Short-wavelength UVC is the most damaging type of UV radiation. However, it is completely filtered by the atmosphere and does not reach the earth’s surface. Medium-wavelength UVB is very biologically active but cannot penetrate beyond the superficial skin layers.
How is UVC light intensity calculated?
How to Calculate UV-C Dose on a Surface
- To get accurate dose data you need to start with a UV-C detector.
- UV Dose = UV Intensity (μW/cm² ) x Exposure Time (seconds)
- Exposure time is how long the UV light is ON and delivering UV to a surface.
- This value can be compared to the table below for various microorganisms.
How is UV-C light intensity calculated?
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.
How many mW m2 is safe?
Limit guidelines in U.S. are from 200 uW/cm2 to 1000 uW/cm2 (2 W/m2 to 10 W/m2) for RF radiation depending on frequency. Countries developed different standards based on either *Thermal Effects *Non-Thermal Effects or *Precautionary Considerations.
How do I convert uW to mW?
uW↔mW 1 mW = 1000 uW.
Do phones emit UV light?
Like the UV rays emitted from the sun, blue light has a short wavelength. But when high amounts of blue light are emitted (say from our computers and phones), it can damage deep layers of the skin and cause premature aging and skin cancer.
How many mW cm2 is safe?
For the general public, the FCC limit is 1,000 µW/cm2.
Why is mW/cm2 important in comparing red light therapy systems?
We would like to educate on why mW/cm2 is the only measurement that is important in comparing red light therapy systems. 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.
What is the difference between MW and mW/cm2?
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. If you ask what the mW are it is like asking what gas the car runs on.
How do you calculate the dose of UV light?
The dose applied by an UV-C lamp installation is a function of the lamp output, the intensity factor, and time. As an equation; Intensity x Exposure time= microwatt seconds/cm2. As an example, a 9 watt UVC lamp at one inch from the lamp is found by this formula: 9 x 127 = 1143 mW/cm2.
What is microwatts/cm2?
Each of these cm2 areas now, for measurement purposes, emits a UVC lamp intensity measured in microwatts, in other words; the term microwatts/cm2. UVC light intensity decreasingly varies as the distance from the UVC light increases.