Once standard fantasy in the world of science fiction, invisibility cloaks are viable products as of 2014. There are three types of invisibility cloaks. The first uses carbon nanotube, another uses metamaterials, and the third uses optical camouflage technology.Know More
Invisibility cloaks that use carbon nanotubes essentially create a mirage effect to trick the viewer into thinking he is seeing something else. To make this happen, sheets of carbon nanotube are rolled in a cylindrical fashion and electrically heated. The heat is then transferred to the surrounding area of water which causes the light to bend, adequately making anything behind it appear invisible.
Invisibility cloaks using metamaterials use concentric gold rings that are injected with polarized cyan light to effectively divert incoming light waves away from the object to make it appear invisible. As of 2014, this technology is expected to be used to hide stationary objects, such as buildings and tanks, rather than to hide humans.
As of 2014, the final type of invisibility cloak made with optical camouflage technology is the only one that is actually wearable as a garment. It creates an optical illusion using a highly reflective garment and a variety of computers, cameras, projectors and mirrors. All of these objects work together to send computer-generated information to a person's sensory perceptions with the aid of a viewing apparatus. The result is that the viewer's brain is "tricked" into not seeing the hidden object.Learn more about Reference Books
A printed dictionary is typically found in one volume that contains tens of thousands of words and brief definitions, whereas a printed set of encyclopedias contains multiple volumes and in-depth explanations of words and concepts. A dictionary is more commonly used to verify the meaning of a word. An encyclopedia is used to gain a deeper understanding of that word.Full Answer >
The major global issues relate to war, international conflict, terrorism, human rights, financial crises, economics, food and agriculture. Additional relevant topics are public health and diseases, and environmental problems.Full Answer >
The term “moonlighting” refers to a person who works a primary job but also works a secondary job on the side. People traditionally moonlight to earn extra money.Full Answer >
There are many websites that can generate MLA citations and assist in developing a complete and accurate bibliography. CitationMachine.net, EasyBib.com, BibMe.org and Cite.com are examples of sites with an MLA converter. Simply select "MLA" as the preferred citation option, and follow the prompts to create a citation in MLA format.Full Answer >