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Disadvantages of low pressure sodium lighting are that fixtures must usually be larger than competing fixtures, and that color cannot be distinguished, due to its emitting principally a single wavelength of light (see security lighting). Due to the substantial size of the lamp, particularly in higher wattages such as 135 W and 180 W, control of light emissions from low pressure sodium luminaires is more difficult. For applications requiring more precise direction of light (such as narrow roadways) the native lamp efficacy advantage of this lamp type is decreased and may be entirely lost compared to high pressure sodium lamps. Allegations that this also leads to higher amounts of light pollution from luminaires running these lamps arise principally because of older luminaires with poor shielding, still widely in use in the UK and in some other locations. Modern low-pressure sodium fixtures with better optics and full shielding, and the decreased skyglow impacts of yellow light preserve the luminous efficacy advantage of low-pressure sodium and result in most cases is less energy consumption and less visible light pollution. Unfortunately, due to continued lack of accurate information,[92] many lighting professionals continue to disparage low-pressure sodium, contributing to its decreased acceptance and specification in lighting standards and therefore its use. Another disadvantage of low-pressure sodium lamps is that some people find the characteristic yellow light very displeasing aesthetically.[citation needed] Light pollution is artificial light introduced into the natural night, especially where it is not needed or wanted. This unwanted light appears To report emergency problems with a street light, contact us Monday to Friday 8am to 5pm on 0845 601 0939, or outside these hours phone 0845 795 9639 Deciphering the Code Do-it-yourselfers can buy inexpensive code readers that connect to this standardized onboard diagnostics (OBD) port and search for the code’s meaning on Web sites such as Engine Light Help. The Check Engine light can even be turned off by some code readers, even though this action alone does not actually repair the underlying problem. In many such cases the light will simply come back on later. What you should do: If your car isn’t feeling jerky or strange when the check engine light comes on the first you should check is the gas cap. Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. Continue driving and see if the check engine light turns off. Alternately, you can purchase a gas cap for about $3 at an auto parts store. All you need to do is take the old one off and screw on the new one. If you’ve already made it to the store, you might as well just replace it. While not car-threatening, it’s good to take care of this right away to improve gas mileage. With over 54,000 lights, we depend on citizens to report problems. When reporting a problem, please provide as much information as you can about the location, especially pole numbers, adjacent addresses, and side of the street. If you phone in, you may get voice mail, so please leave a brief message with the previously mentioned information.  Due to the volume of street lighting repairs, it is taking an average of 20 working days to attend street lighting reports. We are improving this and apologise for any inconvenience this may cause. Recent creationists believe that the universe is only thousands of years old. The universe appears to be far larger than just a few thousand light years in size, suggesting the light travel time problem. However, by concentrating on the current age of the universe, we incorrectly formulate the light travel time problem. I recommend that we properly state the problem by noting that Adam had to see much of the universe at the conclusion of the Creation Week. By an accident I turned off the camera when the picture wasn’t fully out and I pulled it out but now it flashes red loading lights and doesn’t even take pictures In the 1600s, Ole Roemer became one of the first scientists to make a measurement of the speed of light. Roemer observed the orbits of Jupiter’s nearest moon and recognized that its orbital period was observed to be approximately 22 minutes longer when measured from Earth when it was furthest from Jupiter compared to when it was closest to Jupiter. Roemer reasoned that the difference was due to the fact that it took longer for light from Jupiter to travel the extra distance when Earth’s position was on the opposite side of the Sun from Jupiter. The distance d2 is 2.98×1011 m greater than the distance d1. Determine Roemer’s estimate of the speed of light in the 1600s. The effectiveness of using full cutoff roadway lights to combat light pollution has also been called into question. According to design investigations, luminaires with full cutoff distributions (as opposed to cutoff or semi cutoff, compared here[87]) have to be closer together to meet the same light level, uniformity and glare requirements specified by the IESNA. These simulations optimized the height and spacing of the lights while constraining the overall design to meet the IESNA requirements, and then compared total uplight and energy consumption of different luminaire designs and powers. Cutoff designs performed better than full cutoff designs, and semi-cutoff performed better than either cutoff or full cutoff. This indicates that, in roadway installations, over-illumination or poor uniformity produced by full cutoff fixtures may be more detrimental than direct uplight created by fewer cutoff or semi-cutoff fixtures. Therefore, the overall performance of existing systems could be improved more by reducing the number of luminaires than by switching to full cutoff designs. Outdoor Area Light – An outdoor light, typically on private property, that is maintained by the electric company and leased to the customer. In the attic there are three switches. Each switch controls one of the lights in the basement. Faulkner, D. R. 2013. Astronomical distance determination methods and the light travel time problem. Answers Research Journal 6:211–229. Retrieved from The tendency is for people to say that they feel safer in brightly lit areas, but statistics do not indicate that most crime-plagued areas are made safer by increased lighting. Studies are mixed but there are results indicating increased crime with increased lighting. This may be the result of people feeling safer when they actually aren’t, thus being lulled into taking fewer anti-crime precautions. You can also report your lighting problem by providing your account number and the ZIP Code associated with your account, then clicking Next. Hi! A few minutes ago, I had the same problem. I also dropped my camera and the red light won’t disappear. I’ve tried other batteries but it didn’t work. After 30 minutes of changing the batteries it worked again. I suggest you use AA LR6 batteries. They have to be from the SAME brand. Don’t use 2 different brand batteries. I hope it will work! (Also, please use NEW batteries. I changed my batteries with old ones and that’s probably why it didn’t work after 30 minutes) In light of the “March For Our Lives” happening in Washington D.C. today (as well in venues across the nation and the globe), I want to address the logic of the argument I have seen most often in the wake of the Stoneman Douglas High shooting—an argument against imposing stricter gun regulations, such as universal background checks and banning assault rifles. The argument goes like this: A newer method for predicting and measuring various aspects of light pollution was described in the journal Lighting Research Technology (September 2008). Scientists at Rensselaer Polytechnic Institute’s Lighting Research Center have developed a comprehensive method called Outdoor Site-Lighting Performance (OSP), which allows users to quantify, and thus optimize, the performance of existing and planned lighting designs and applications to minimize excessive or obtrusive light leaving the boundaries of a property. OSP can be used by lighting engineers immediately, particularly for the investigation of glow and trespass (glare analyses are more complex to perform and current commercial software does not readily allow them), and can help users compare several lighting design alternatives for the same site.[100] Tonus Fortis Maca peruana Tonus Fortis Tonus Fortis Maxman Zevs Atlant Gel machoman Zevs VigRX Plus