1 ph = 10,000 br
1 br = 0 ph
Example:
Convert 15 Phot to Brightness:
15 ph = 150,000 br
| Phot | Brightness |
|---|---|
| 0.01 ph | 100 br |
| 0.1 ph | 1,000 br |
| 1 ph | 10,000 br |
| 2 ph | 20,000 br |
| 3 ph | 30,000 br |
| 5 ph | 50,000 br |
| 10 ph | 100,000 br |
| 20 ph | 200,000 br |
| 30 ph | 300,000 br |
| 40 ph | 400,000 br |
| 50 ph | 500,000 br |
| 60 ph | 600,000 br |
| 70 ph | 700,000 br |
| 80 ph | 800,000 br |
| 90 ph | 900,000 br |
| 100 ph | 1,000,000 br |
| 250 ph | 2,500,000 br |
| 500 ph | 5,000,000 br |
| 750 ph | 7,500,000 br |
| 1000 ph | 10,000,000 br |
| 10000 ph | 100,000,000 br |
| 100000 ph | 1,000,000,000 br |
The phot (symbol: ph) is a unit of illuminance that measures the amount of light received per unit area. Specifically, one phot is defined as one lumen per square centimeter. This measurement is crucial in fields such as photography, horticulture, and interior design, where understanding light levels is essential for optimal performance and aesthetics.
The phot unit is part of the CGS (centimeter-gram-second) system, which is a metric system of physical units. Although the phot is not commonly used in modern scientific literature, it serves as a historical reference point for illuminance measurement. The SI unit for illuminance is the lux, where 1 phot equals 10,000 lux.
The phot was introduced in the early 20th century as a means to quantify light levels in various environments. Over time, the need for a more standardized and universally accepted unit led to the adoption of the lux as the primary unit of illuminance in the International System of Units (SI). Despite this shift, the phot remains relevant for specific applications and historical context.
To convert illuminance from lux to phot, you can use the following formula: [ \text{Illuminance in phot} = \text{Illuminance in lux} \times 0.0001 ]
For example, if you have an illuminance level of 500 lux, the equivalent in phot would be: [ 500 \text{ lux} \times 0.0001 = 0.05 \text{ ph} ]
The phot is particularly useful in specialized fields such as:
To use our Phot Converter Tool, follow these simple steps:
What is the difference between phot and lux?
How do I convert lux to phot?
In what fields is the phot used?
Is the phot still relevant today?
Can I convert other units of illuminance using this tool?
By utilizing the Phot Converter Tool, users can easily convert illuminance measurements and gain a better understanding of light levels in their specific applications. This tool not only enhances user experience but also contributes to improved SEO rankings by addressing relevant keywords effectively.
Brightness, represented by the symbol br, is a measure of the amount of light that is emitted or reflected from a surface. It is often quantified in terms of illuminance, which refers to the amount of luminous flux per unit area. This measurement is crucial in various fields, including photography, architecture, and lighting design, as it helps determine how well-lit a space is.
Brightness is standardized using units such as lux (lx) and foot-candle (fc). One lux is defined as one lumen per square meter, while one foot-candle is equivalent to one lumen per square foot. Understanding these units is essential for accurately measuring and converting brightness levels in different environments.
The concept of brightness has evolved significantly over time. Early measurements were based on subjective assessments of light intensity. However, with advancements in technology and the development of photometric standards, brightness is now measured using precise instruments. The introduction of digital light meters has further enhanced our ability to quantify brightness accurately.
To illustrate how to convert brightness levels, consider a scenario where you have a light source emitting 1000 lumens over an area of 10 square meters. The illuminance can be calculated as follows:
[ \text{Illuminance (lux)} = \frac{\text{Luminous Flux (lumens)}}{\text{Area (m²)}} ]
[ \text{Illuminance} = \frac{1000 \text{ lumens}}{10 \text{ m²}} = 100 \text{ lux} ]
Brightness measurements are vital in various applications, including:
To effectively use the Brightness Converter Tool, follow these steps:
For more detailed information, visit our Brightness Converter Tool.
What is brightness in terms of illuminance? Brightness refers to the amount of light emitted or reflected from a surface, measured in units like lux or foot-candle.
How do I convert lux to foot-candle using the tool? Simply input the lux value, select 'lux' as the input unit, and 'foot-candle' as the output unit, then click 'Convert'.
What is the difference between lux and foot-candle? Lux measures illuminance in metric units (lumen per square meter), while foot-candle measures illuminance in imperial units (lumen per square foot).
Can I use this tool for outdoor lighting calculations? Yes, the Brightness Converter Tool is suitable for both indoor and outdoor lighting calculations.
How accurate is the Brightness Converter Tool? The tool provides precise conversions based on standardized measurements, ensuring high accuracy for your brightness calculations.
By utilizing the Brightness Converter Tool, you can easily navigate the complexities of light measurement, ensuring optimal lighting conditions for any project or application.
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