One of the biggest disadvantages is not being able to make connections as easy as the copper. Fiber optic cables have a core as fine as a human hair, making it extremely difficult to splice. Copper cables are obviously not going to be around forever with the fiber optics being so futuristic, but they still have advantages over the fiber. Copper is very easy to work with. When making connections it is so much easier to splice the copper cable than it would be for the fiber.
The middle layer is a group of laser beams. And the inner layer is nanotubes that protect structures from laser beams. Later he argues the lasers will destroy objects, which the lasers will go that get through the force field. To fix that problem Kaku thinks that the force field needs to have photochromatics. Then Kaku states that force fields can do more than deflecting laser beams because it can levitate objects by the use of magnetic force fields.
It cannot be found as a native metal in nature, The Social benefits and limitations of Zirconium Zirconium is used primarily as an alloying agent because it is highly resistant to corrosion from alkali, salt water, acids and many other possible sources of corrosion. Because of this it is often used in alloys that are used in objects exposed to acids a lot, such is surgical apparatus. This makes hospitals a safer place, because it reduces the chance of acid breaking or damaging tools, which in turn could result in patients getting injured. On the downside, powdered zirconium is highly flammable, and it can cause a type of tumor caused by inflammation or injury called a granuloma. This means that it can be very dangerous if kept in powdered form.
The presence of salinity in polyacrylate improves its ability to absorb water. The oil coats the polyacrylate while the water is trapped inside. This provides a hydrophobic coating outside the water-absorbed polyacrylate. In conclusion, polyacrylate proves to be a very versatile polymer with many properties such as retarding flames and absorbing water. Introduction: The purpose of this experiment is to distinguish different properties of polyacrylate, as well as test the extents of its already known properties.
* Carbon nanotubes (CNTs), one of the many forms of nanotubes, are tube-shaped molecules made of carbon-carbon bonded [allotropes (property of some chemical elements to exist in two or more different forms) of carbon] atoms. The carbon atoms are linked in hexagonal shapes and are bonded covalently (sharing electron pairs between atoms) to three other carbon atoms. Carbon nanotubes are one to ten nanometers in diameter (for comparison, 50,000 times thinner than that of a human strand of hair) and can be up to several centimeters in length. Although they are incredibly strong, they are brittle. This means that they can be bent, and when released, they will spring back to their original figure.
Medical Isotopes can be really good and beneficial to society in the correct use. They can be developed into different medical treatments. Some examples of these are: Brachytherapy that is used for curing different types of cancers and radioimmunotherapy that are isotopes sent to the blood to kill cancerous cells like the leukemia ones. Also it have been discovered that medical isotopes have a good effect on curing cardiovascular diseases. In Europe doctors have been injecting medical isotopes and it have been found that they can kill HIV that are not that developed.
The main ingredient in glass is silicon dioxide. If you didn’t know, silicon dioxide is also known as sand in nature. The most interesting part about glass is that it doesn’t have a specific melting point. Different types of glass melt at different temperatures, but the most common glass melts at 1500 degrees C. Also glass never reaches a point at which it suddenly becomes liquid. So that means the hotter the glass gets it will flow faster but it will never become a liquid completely.
It is the engine of scientific progress and thus of the progress of society. A particularly fruitful way to look at the history of science is to study how science itself has changed over time, with an eye to what that trajectory might suggest about the future. Kelly chronicled a sequence of new recursive devices in science... 2000 BC — First text indexes 200 BC — Cataloged library (at Alexandria) 1000 AD — Collaborative encyclopedia 1590 — Controlled experiment (Roger Bacon) 1600 — Laboratory 1609 — Telescopes and microscopes 1650 — Society of experts 1665 — Repeatability (Robert Boyle) 1665 — Scholarly journals 1675 — Peer review 1687 — Hypothesis/prediction (Isaac Newton) 1920 — Falsifiability (Karl Popper) 1926 — Randomized design (Ronald Fisher) 1937 — Controlled placebo 1946 — Computer simulation 1950 — Double blind experiment 1962 — Study of scientific method (Thomas Kuhn) Projecting forward, Kelly had five things to
This ideally will lead to the box being able to withstand the impact that will occur when the box is dropped. The second key part to our container is the sponge/foam padding that we attached to the bottom of our cardboard box. This padding cushions the fall so that when it hits the ground, the impact is absorbed into the foam pads and not the egg. The padding will cause the box to bounce once it has hit the ground, but the materials inside the box are enough to keep the egg from breaking. Plus, the box would be better off bouncing a little and landing on its side, than falling from a great height and having nothing on the bottom to absorb the shock.
Date: October 21, 2012 Class: Survey of the Sciences Subject: Unit 5. Isotopes and Radiation Radioactivity is the emission of energetic particles or waves from atoms. Natural radiation occurs when unstable nuclei transform to some other nucleus by emitting radiation. As they decay over varying lengths of time (from microseconds to hundreds of thousands of years), they emit energetic particles or waves. An isotope is a form of a chemical element whose atomic nucleus contains a specific number of neutron s, in addition to the number of proton s that uniquely defines the element.