Ted's Blog

I’ve been learning a lot about flashlights over the last couple of years and that has meant learning a lot about LED’s. All of the flashlights I have bought have an LED as the light source. For the last couple of years the biggest name in LED’s for flashlights has been Cree, a company in North Carolina. Right after getting into flashlights, they introduced the XP-G LED which put out a lot more light than their earlier XP-E and XR-E LED’s. About a year later, they came out with an even brighter LED called the XM-L which can put out maybe 800 lumens compared to 400 for the XP-G and maybe 200 for the XP-E. But the XM-L also uses a lot more power. In addition to bigger and brighter LED’s, they have also introduced tints other than cool white, such as neutral and warm white tints. Also they have started focusing on higher Color Rendering Index values. Sunlight or incandescent light has a value of 100, but LED’s are often around 70. But “high CRI” LED’s are around 85 or 90.

Here are the XP-E and XP-G LED’s:

Continue reading “New LEDs!”

Last night as usual, I let Katie out into the front yard to go to the bathroom before we go to bed. She doesn’t like to go in the backyard. Then she stands around for a while until I go get Austin. Austin goes right away and I let him back in. Then Katie will go and we will go back in. Except last night when Katie and I were going back in the door seemed to be locked. I wondered if maybe Austin had locked us out. Katie has done this before by jumping up on the door and hitting the deadbolt, but this was the door knob.
Continue reading “Front Door Gone Bad”

Yesterday I did a bunch of reading about wind power on Wikipedia. After initially finding out that the largest wind farm in the world was one in Texas that I’d never heard of, I found out that a new one in California that is still under construction is producing more power. So clearly the Wind Farms article I had read was out of date, while the article about California’s Alta Wind Energy Center had the latest number. Because I had been misled, I felt like the Wind Farms article should be updated, so I went in and edited it. But it’s Wikipedia so they like you to add sources to back up any facts you add, so I had to get the source from the other article and add it to this one. Then it turned out they mentioned that same factoid about the world’s largest where they talked about Wind Farms in the United States. Since I was using the same source, I learned about naming a source so it is easier to recall, which is fine because I like learning new things.

Continue reading “Updating Wikipedia”

I’ve always thought windmills were pretty cool. I think I just like the idea of free power. When I drove out to Los Angeles, I wanted to try and drive through one of the biggest wind farms in the country that is near there, but didn’t make it. On a windjammer cruise there was a windmill up on top of a hill of one of the islands we visited (great idea for an island since otherwise they would have to import fuel and they already have plenty of wind). When I went to Ireland, there were windmills all over the place and I took pictures and video of them. As part of the European Union, Ireland has a goal of producing 22% of its power from renewable sources which would include wind, solar, and hyro, but the biggest renewable source would be wind. They never made 22%, but they had an intermediate goal of 13.2% and in 2010, got to 11%. But since power demand and wind are not consistent, wind has sometimes supplied as much of 50% of their demand at one particular moment (probably of low demand and a nice wind).

Some of the biggest wind farms in the world are in the US. California started some massive wind farms in the 70’s that are still operating. The one near LA is called San Gorgonio Pass, with 3,218 windmills producing 615 megawatts of power. The Tehacapi Pass Wind Farm produces 705 megawatts. But the biggest concentration of windmills is the Altamont Pass with 4,930 windmills producing 576 MW. The older windmills are much smaller and produce less power each. They were trying a lot of things early on including egg beater windmills that spin no matter which way the wind is blowing, one-armed giants, and variable pitch blades that adjust to the strength of the wind and can withstand potentially damaging winds by slicing through the wind instead of catching it. The fast-spinning older windmills also made a lot of noise and kill a lot of birds.

Continue reading “Wind Farms”

Recently I had been reading up about LED light bulbs, including the award-winning L Prize Bulb. For a few years they have been saying that LED bulbs would replace compact fluorescent bulbs as LED bulbs get more efficient and less expensive. However, I’m not sure that has happened yet. LED bulbs are still significantly more expensive than CFL bulbs, but LED bulbs aren’t all that much more efficient. They do have some other advantages over CFL bulbs in that LED bulbs don’t get dimmer over the years. And LED bulbs don’t contain mercury. Although I haven’t had any problems with my CFL bulbs, turning them off and on frequently can shorten their lives and some bulbs don’t come at full brightness. So LED’s don’t suffer from any of those things. Continue reading “Collection LED Light Bulb”