Everyone is looking for ways to save power.  Whether to save money or the planet, one of the best and most popular ways to save power on lighting is by installing dimmer switches to control your lights.  Besides saving power, they’re also great for setting the mood in your home.  More and more dimmer switches are being installed in American homes every year.

Dimmer switches are easy to install, even for an everyday person. Of course, even an easy installation can be problematic, so you should always contact the best Dallas electrician to ensure that you’re doing things right, or to perform the dimmer switch installation for you if you don’t want to take a chance of making a mistake.  Either way, here are some important do-it-yourself electrical tip to keep in mind about dimmer switches:

By Clarissa Allison | June 24th, 2016

Energy is the crux of many social, economic, and climate problems.  Renewable energy sources offer a brighter, more sustainable future.  International Energy Agency (IEA) estimates that almost 1 billion people will still be without access to electricity in 2030, in part owing to rapid population growth, mostly in sub-Saharan Africa and south Asia. The number of people without access to clean cooking stoves and fuels is similarly projected to drop only slightly, from 2.6 billion to 2.5 billion.

If you live in the United States, you’re likely well-familiar with our typical wall-socket setup. Your plug has two flat pieces of metal roughly half of an inch wide, with one side sometimes being slightly wider than the other. Your wall socket has two slots that match this, with one side also being slightly larger than the other. However, sometimes there’s a variance: some plugs have a third prong below and between the normal two, and most electrical sockets also have a third hole to match this plug. What’s the difference between these two types of plugs and is one better than the other?

To put it simply, yes, one is better than the other. When it comes to electrical plugs, the old adage “less is more” does not apply—the three-prong plug is far better than a two-prong. To learn why, let’s discuss the difference between the two.

In order for electricity to flow, you must complete a circuit. A circuit essentially is a connection from your power source to the device, and then from the device back to the power source. The line that brings power from the power source to the device is called your “hot wire”, which is most often red and comes off the positive terminal (noted by the large “+” sign). The line that then returns from the device to the terminal, usually a black wire connected to a “-“ sign, is known as the “neutral wire.” A plug must have both of these lines in order to work.

However, the third prong in a three-prong plug is a “ground” plug, which dramatically improves safety. When an unexpected burst of electricity happens, such a short in the device or a surge from your power supply, the ground plug will take that abundance of additional electricity and move it away from the device and down into the ground where it is safe. This prevents your device from being overloaded which can cause overheating, sparking, and fires in addition to ruining it.

Three-prong plugs didn’t become the standard in homes in North America until the late 1960s. If you have a home that was constructed around this time or after, odds are your wall sockets are probably already of the three-prong variety. Two-prong plugs can work with three-prong sockets just fine, and you’ll rarely experience any issues.

However, if you have any old two-prong plugs, you’ll likely need your electrical system updated in order to upgrade to a three-prong setup. Properly installing ground wires can involve several hours of electrical work and even cutting into your walls in order to do so properly, so it’s a rather large undertaking. However, it’s by far the safest and most prudent option.

Another option that doesn’t involve tearing open your walls is to install a ground fault circuit interrupter outlet, otherwise known as a GFCI. These sockets are two-pronged, but feature a miniature circuit breaker that measures the resistance through a plug and mechanically shuts off when the risk of a shock is present. While this can help you avoid being shocked by a faulty device, there is still no ground wire present so your electronics are not protected from a power surge.

Maciej Winiarcyzk using more than two thousand digital photographs just over a month ago.

I have never had the privilege of seeing the northern lights in real life, but my sister lives in northern Canada and has told me about them. (She’s a pretty credible source: She even named her daughter Aurora.) After asking her, “What ARE the northern lights,” several times, I now understand the aurora borealis to be a visual effect of the collision of solar wind and magnetospheric charged particles with the thermosphere. Can you see why I had to ask what the northern lights were more than once? The northern lights are most spectacular near the North Pole and during spring and autumn equinoxes. (And, by the way, no. The northern lights are not Santa’s off-season hobby.) But the northern lights, if there are some geomagnetic storms a-brewin’, can be seen closer to home, too, visible occasionally as far south as Chicago or New York.

Anyway, this guy Winiarcyzk is an astronomy enthusiast who lives in Caithness, which is at the tippy top of Scotland. There’s isn’t much light pollution way up there, so it’s a good place for such a sky-minded person to live and enjoy his hobby. Wonderfully, with this time lapse video of the northern lights, we get to enjoy his hobby, too.

Take a look. Have you ever seen anything more lovely occurring in nature? You know, with all this solar wind, magnetospheric particles, thermospheres, and geomagnetic storms, it sure seems like there is a lot more going on in nature than we can readily sense.