1. What is Daily Light?

Daily light (lux-h) is a measure of the total light exposure over a period of time, calculated by multiplying light intensity (lux) by duration of exposure (hours).

2. How Does the Calculator Work?

The calculator uses the daily light equation:

Where:

• \( intensity \) — Light intensity in lux
• \( duration \) — Exposure duration in hours

Explanation: The equation calculates cumulative light exposure by combining intensity and duration.

3. Importance of Daily Light Calculation

Details: Daily light measurement is important for understanding light exposure in various settings including indoor lighting design, plant growth studies, and circadian rhythm research.

4. Using the Calculator

Tips: Enter light intensity in lux and duration in hours. All values must be valid (intensity > 0, duration > 0).

5. Frequently Asked Questions (FAQ)

Q1: What is a typical lux value for indoor lighting?
A: Typical indoor lighting ranges from 100-1000 lux, while outdoor daylight can range from 10,000 to 100,000 lux.

Q2: How is daily light different from instantaneous light?
A: Instantaneous light measures light at a moment in time (lux), while daily light measures cumulative exposure over time (lux-h).

Q3: Why is daily light important for plants?
A: Plants require sufficient daily light integral (DLI) for photosynthesis and growth, typically measured in mol/m²/day.

Q4: How does daily light affect humans?
A: Adequate daily light exposure helps regulate circadian rhythms and can affect mood, sleep, and overall wellbeing.

Q5: Can this calculator be used for sunlight exposure?
A: Yes, if you know the intensity and duration of sunlight exposure, you can calculate the daily light exposure.