Nasa has a better explanation here.
Earth is slowing down. But not by much. Over the past year the earth has slowed 0.002/day. That adds up to about 1 second for the year. The moon, the sun, the weather all affect the rotation of the earth. Apparently the earth rotated in 23 hrs back when the dinosaurs were around. Why does that matter? Apparently we have some precision equipment that relies on exact timing which in turn might be used in distance and location measurements like GPS.
Nasa has a better explanation here.
I was in a restaurant yesterday watching some sports on tv. Since the Rockies were rain delayed at the time, they were talking about a pitcher that was hit by a line drive. I looked it up today and ended up watching a couple of terrible pitching injuries from baseballs.
For all of you that have children that play sports, or even yourself, don't forget to protect those eyes.
We now have sports goggles by Liberty Sports. Check out the options on their website, http://www.libertysport.com/
We're doing a 50% off sports googles and prescription lenses (some of them are actually pretty nice). They're also good for motorcycles (may not fit under helmets well though).
We've teamed up with this company to offer more frames than we can possibly have room for in our office. Their website is iristocracy.com.
They will send 4 frames you choose and if you purchase one, we can put the lenses in it for you. Just bring the frame to us with a current prescription and we'll help you with the lens options.
Special offer! If you purchase a frame from iristocracy.com during March 2015, we'll put in single vision lenses FOR FREE! See our facebook page about that.
Since we have an edger now and we're buying uncut lenses with anti-reflective coatings, I was curious about the manufacturing process of these lenses. I'm still researching that but what I have found out is one of the biggest reasons for the failure of a coating is the cleaning method.
Windex is a no-no. Anything with a very high pH (over 8) or low pH (less than 5.5) can cause the coating to delaminate (peel away) from the lens. If you use lens cleaner, there are some designed specifically for anti-reflective lenses but Dawn liquid soap (the plain kind with lemon or other additive) works well too.
One other factor that might cause an anti-reflective coating to fail is heat so leaving them in a car when isn't a good idea. I haven't read what temperatures would cause the coating to "craze" but we all know the inside of a car on a hot sunny day isn't pleasant.
And here's something I didn't know. Bounty paper towels are an acceptable material for cleaning off the lenses. The report I read didn't suggest other brands however.
We have a new edger. We've never had one before either. I'm excited about this for a couple of reasons. We'll be able to complete some glasses in our office instead of sending them to a lab and hopefully get them back to patients faster. We'll also be able to compete better on prices...that's the best thing! For those that have vision plans however, they set the prices.
Here's the new edger! If you want to come by and see how it works, just ask. It does the job of 3 or four different tools compared to some other older equipment. I know the person in the video is a sales representative but I think he explains the equipment really well.
A couple of nearby Colorado companies (Lockheed Martin Space Systems/United Launch Alliance (Littleton) and Ball Aerospace (Broomfield) have helped build this huge rocket that will send astronauts into space one day to meet up with asteroids or Mars . Hopefully the massive Delta IV Heavy rocket will successfully send the Orion capsule around the earth a couple of times tomorrow morning (Friday, Dec. 5). Launching from the lower states (FL and CA) which are closer to the equator uses the earth's faster rotation there as a boost for speed. If you're up tomorrow morning at 5:05am MST, there are live broadcasts to watch. I might get up for that. I forgot this morning.
Click here for a little info on the reasoning behind the boost around the earth.
I went to a few different colleges. Nothing I did was thought out very well but that was before the internet. I'd like to think that the internet would have helped me make a few better decisions about college. I will say that I made at least one good decision and that was taking the Strong Interest Inventory test. That test is what made me decide on optometry. But that was after my less than straight forward college career.
I believe in Khan Academy and what Sal Khan has done to help people learn by doing his teaching videos on a huge range of topics and educational levels. I've watch many of them. He's created a great series on college choices so I hope you get a chance to watch them. Click on this link to watch them, click here.
Hopefully in a couple of days we will get some solar viewing sunglasses. We'll have a total of 25 and they are free to Peak Family Eye Care patients. One per family. I'll update this when they are available.
The eclipse will be about 50% in the Denver area and around 3:45pm I think. If that's not right I'll update this.
A total lunar eclipse will occur when most of us are asleep but if you wake up at 4:27am and the moon looks funny, you're seeing the moon completely eclipsed by the earth and it will stay that way for almost an hour in the Denver area. Otherwise, enjoy the full moon tonight.