How do you calculate the UV Index of solar radiation?

280 x 1.06 x 0.73 = 216.7 The final step of the calculation scales the total UV effect, dividing it by 25 and rounding to the nearest whole number. The result is a number that usually ranges from 0 (darkness or very weak sunlight) to the mid-teens (very strong sunlight). This value is the UV Index.

How much of solar radiation is UV?

Ultraviolet radiation makes up just over 8% of the total solar radiation. Each of these bands has a different impact on the environment. Most of the solar radiation that reaches Earth is made up of visible and infrared light. Only a small amount of ultraviolet radiation reaches the surface.

Can ultraviolet light detect radiation?

However, only about 2% of the wavelengths the Sun gives off are detectable with human eyes. Ultraviolet light (UV) is an example of light that cannot be seen by the human eye. (Other examples include radio waves, microwaves, infrared light, X rays, and gamma rays.)

Is a 10 UV Index bad?

8 to 10 means very high risk. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. A UV Index reading of 11 or more means extreme risk of harm from unprotected sun exposure. Take all precautions because unprotected skin and eyes can burn in minutes.

What does UV Index 1 mean?

The UV Index was previously reported on a scale of 0 to 10+, with 0 representing “Minimal” and 10+ representing “Very High.” As of May 2004, EPA and NWS will report the Global Solar UV Index using a scale of 1 (or “Low”) to 11 and higher (or “Extreme”).

What is solar radiation index?

The Global Solar UV Index (UVI) describes the level of solar UV radiation at the Earth’s surface. The UVI is an important vehicle to raise public awareness of the risks of excessive exposure to UV radiation, and to alert people about the need to adopt protective measures.

What is the safest time to be in the sun?

Take these steps to stay sun-safe:

Seek shade: Limit your direct exposure to the sun, especially between 10 a.m. and 4 p.m., when UV rays are strongest.
Cover up: When you are out, wear clothing and a wide-brimmed hat to protect as much skin as possible.

What are the 3 types of UV rays?

UV radiation is classified into three primary types: ultraviolet A (UVA), ultraviolet B (UVB), and ultraviolet C (UVC)….Some artificial sources of UV radiation include:

Tanning beds.
Mercury vapor lighting (often found in stadiums and school gyms)
Some halogen, fluorescent, and incandescent lights.
Some types of lasers.

What is the main source of ultraviolet radiation?

Sunlight
Sunlight is the main source of UV radiation, even though UV rays make up only a small portion of the sun’s rays. Different types of UV rays reach the ground in different amounts. About 95% of the UV rays from the sun that reach the ground are UVA rays, with the remaining 5% being UVB rays.

What is a safe UV Index number?

Radiation: The ultraviolet (UV) index

UV index	Action
0 to 2	You can safely enjoy being outside!
3 to 7	Seek shade during midday hours! Slip on a shirt, slop on sunscreen and slap on hat!
8	Avoid being outside during midday hours! Make sure you seek shade! Shirt, sunscreen and hat are a must!

What UV is best for tanning?

Good UV Index for tanning

UV Index 0 – 2. Low exposure level. Average time it takes to burn: 60 minutes.
UV Index 3 – 5. Moderate exposure level. Average time it takes to burn: 45 minutes.
UV Index 6 – 7. High exposure level.
UV Index 8 – 10. Very high exposure level.
11+ UV Index. Extreme exposure level.

What are the components of a solar radiation sensor?

The Solar Radiation Sensor is comprised of the following components: Shield —Serves the same role as in the UV Sensor. Sensor Body —Composed of a shield, the same as that in the UV Sensor; and a sensor

Where are the UV and solar radiation sensors located?

The Solar Radiation and UV Sensors are designed to be mounted on the Sensor Mount-ing Shelf (Davis Instruments Product Number 6672). The Sensor Mounting Shelf is a stand that attaches to your ISS and provides a mounting location for up to two sensors.

What kind of UV light sensor do I Need?

Aluminum gallium nitride (AlGaN) photodiodes greatly simplify UV measurements, since expensive filters are not required. Several UV sensors that use AlGaN photodiodes are available. One is Adafruit’s GUVA-S12SD Analog UV Light Sensor, which uses a GenUV GUVA-S12SD GaN photodiode from Roithner LaserTechnik that responds from 240 to 370nm.

What kind of UV sensor does vantage Pro2 use?

UV and Solar Radiation Sensors For Vantage Pro® and Vantage Pro2™ Weather Stations The Davis Instruments UV Sensor is a precision instru-ment that detects ultraviolet (UV) radiation at wave-lengths of 290 to 390 nanometers. The spectral response is closely matched to the Erythema Action Spectrum, defined by McKinlay and Diffey (1987) and

How do you calculate the UV Index of solar radiation?