Review on ✅ Enhance Solar Efficiency with Solarmeter Model 4 2 Sensitive Meter by Wayne Girard

When you're trying to protect your skin from the sun, this blood glucose meter is a big help. Quality "Made in USA". Don't compare this precision instrument to cheap UV meters on the market. I've tried several of them, they often show readings of 0 or 1 when placed in the shade. Visible light is a small part of the electromagnetic spectrum. The wavelength varies from about 400 nm to 700 nm. Red is about 625-740, purple about 380-435. UVA is closest to visible light. If you imagine a rainbow with red on one side and purple on the other, UVA is an even shorter wavelength than purple. UVA (315 to 400 nm), UVB (280 to 315 nm) and UVC (100 to 280 nm). Of the UV solar energy that reaches the equator, 95% is UV-A and 5% is UV-B. No measurable UV radiation reaches the earth's surface from solar radiation, since the shortest wavelengths of UV radiation are completely absorbed by ozone, molecular oxygen and water vapor in the upper atmosphere. Do you think you're safe in the shadows? Well it isn't. You will be surprised how much UVA is contained in the reflected light. Pointing this meter directly at the sun around midday will give you a reading of around 1500. Stepping into the shade will still give you a reading of around 400. This depends on nearby reflective surfaces. Shade is useful, but UV-A is by no means close to zero. Recent studies show that UV-A causes more permanent sun damage. UVB is primarily responsible for sunburn. This meter displays 0 to 1999 µW/cm² UVA. It is an excellent tool for testing car, home and commercial window tinting. My house is relatively new and has the latest LOW-E double glazing. But even with the windows in the shade, I still got 6-7 readings. I've had 3M 70% tint on some windows that I've spent a lot of time on and now the reading is ZERO when the windows are in the shade. (70% means 70% of VISIBLE light gets through and 30% is blocked. At 70% tinted, it is very difficult to tell which windows are tinted and which are not inside or outside the home. Many people mistakenly believe that the Windows in modern cars offer sun protection yes, but only partially Normal glass panes UV-B quite well, but to a lesser extent UV-A I recorded various readings from the side windows of my cars At midday, two cars read between 30 and 50 One car only read about 8. (A car's windshield blocks more UVA than side windows because it's much thicker. That's fortunate because you can't tint a windshield, only side windows.) An unknown factor is the car's ability to block no tint. My cars have always had some sort of tint on the windows. The car with the lowest UVA was a 2016 Toyota that the dealer installed "SolarPlate". n let SolarPlate is manufactured by "Permaplate" and they sell their products to car dealerships. I called Permaplate at 800-453-8470 and was given the names of several local car dealerships that would match each car. Before taking any action on my vehicles, I consulted a professional car tint installer with years of experience. They sell some of the best and most expensive car tints. I took the samples to the parking lot on a sunny day. They did a good job of blocking UVA when tested with this meter. But NOT AS GOOD as SolarPlate. I took two other cars to the local Toyota dealership and they had my tinted windows replaced with SolarPlate. (Unlike some other Toyota cars, the nice thing is that you can turn off the lights.) Two cars that had 30-50 µW/cm² UV-A now showed 8-15 µW/cm² UV-A with the SolarPlate . (I have NO financial relationship with SolarPlate other than being a customer.) You can also use this gauge to test clothing and sunscreen. To test the sunscreen, I applied the sunscreen to cling film. Artificial light also emits small amounts of UV-A. Fluorescent and halogen spotlights gave low readings. Good old incandescent bulbs and my CREE LED show zero. Using this meter, I was surprised to find that the lights on the tennis court gave me a reading of about 10, even though the lights were about 20 feet above my head. Stay out of the sun between 10am and 4pm, you are more or less safe. Inexpensive UV measuring devices reinforce this belief. You can see the "UV" numbers drop sharply towards evening. I wish it were different, but UVA doesn't fade as quickly as UVB. Found the diagram online. You will notice that the blue line (UVB) fades faster than the red line (UVA). You cannot completely rule out exposure to UVA and UVB radiation. But this meter is a powerful tool that will help you minimize exposure as much as possible. When it comes to vitamin D, do your own research. My research shows that a person with a healthy and normal diet gets enough vitamin D. Also, despite your best efforts, you can still get some vitamin D from the sun. My only very minor criticism of this gauge is the battery compartment. This is too small for most 9V lithium batteries. (I NEVER use 9 volt alkaline batteries.) Aside from the fact that they last four times longer than alkaline batteries, I've never seen lithium batteries leak. To my knowledge there is only one 9V lithium battery that meets alkaline battery size limitations and that is the Ultralife U9VLJPFP. I made a small cut inside the case to make room for the battery compartment. Stop guessing about UV exposure, buy this meter (made in the USA) and you'll know your situation.