1. What is UV Intensity?

UV Intensity measures the power of ultraviolet radiation per unit area. It's typically expressed in milliwatts per square centimeter (mW/cm²) and is crucial for applications like UV curing, disinfection, and phototherapy.

2. How Does the Calculator Work?

The calculator uses the basic intensity formula:

Where:

• \( \text{Power} \) — Total UV power output (mW)
• \( \text{Area} \) — Irradiated area (cm²)

Explanation: The formula calculates how concentrated the UV energy is over a given surface area.

3. Importance of UV Intensity Calculation

Details: Proper UV intensity measurement is essential for ensuring effective disinfection, preventing material damage, and maintaining safety standards in UV applications.

4. Using the Calculator

Tips: Enter the total UV power in milliwatts and the irradiated area in square centimeters. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are typical UV intensity values?
A: For disinfection, 0.1-10 mW/cm²; for curing, 10-1000 mW/cm²; for medical therapy, 1-100 mW/cm².

Q2: How does distance affect UV intensity?
A: Intensity follows the inverse square law - doubling distance reduces intensity to 1/4 of original value.

Q3: What's the difference between irradiance and intensity?
A: In UV applications, the terms are often used interchangeably, though technically irradiance includes spectral considerations.

Q4: How accurate is this calculation?
A: This provides theoretical maximum intensity. Actual intensity may be lower due to reflection, absorption, and other factors.

Q5: What safety precautions are needed for high UV intensity?
A: Eye protection, skin covering, and proper shielding are essential for intensities above 0.1 mW/cm².