The arm also frees up the person's hands -- it hangs directly on the vest, so the operator doesn't have to do anything to hold the camera sled up. He or she can concentrate on positioning the camera to get the best shot. The Steadicam Sled The Steadicam sled spreads out the ...
Swap spreads are related to yield spreads. While yield spreads focus on the difference between bonds with different credit qualities or sectors, swap spreads specifically measure the difference between swap rates and government bond yields. This difference reflects the additional yield investors demand fo...
This spreads the load out over a larger area, allowing the bearing to handle much greater loads than a ball bearing. However, this type of bearing is not designed to handle much thrust loading. A variation of this type of bearing, called a needle bearing, uses cylinders with a very small...
Once you know the principles behind holograms, understanding how they can do all this is easy. This article will explain how a hologram, light and your brain work together make clear, 3-D images. All of a hologram's properties come directly from the process used to create it, so we'll...
How do telephones work? A traditional landline telephone system only contains three simple parts: a hook switch, which connects and disconnects the phone from the network; a speaker; and a microphone, through which sound waves from your voice compress and decompress the granules, changing the re...
How do computer worms work? Computer worms are dangerous because of how capable they are. As soon as a worm gains a foothold in a host machine, it’s able to spread throughout a network without any external aid or actions. As self-contained malware, worms don’t need to fool you into...
Not only does this rarely work -- it usually results in a hideously ugly photograph on the cover of a celebrity mag. Which is why disguises that actually conceal their owners are so impressive. Take the Boston Tea Party. Do we relish this American legend because a bunch of Massachusetts ...
Spreads depend on the underlying asset which is being traded. The more an asset is traded, the more liquid its market is. The more liquid the market, the smaller, or "tighter", the spreads. In markets with low liquidity, or "thin" markets, such as the natural gas market, the spreads...
If the change is beneficial, then it is likely that the offspring will do better than other offspring and so will reproduce more. Through reproduction, the beneficial mutation spreads. The process of culling bad mutations and spreading good mutations is called natural selection. As mutations occur...
For broad indexes like the S&P 500, it would be impractical or expensive for an investor to construct the right proportions in a portfolio. Index funds do the work by holding a representative sample of the securities. S&P 500 index funds, the most popular and oldest such funds in the U.S...