I know you get money when the stock goes down but what is the science behind it?

The main idea behind short selling is that an investor/trader believes that a certain stock (for example, XYZ) will be dropping in value in the near future. In order to capitalize on this speculation, he can earn profit by effectively "borrowing" shares of XYZ from his broker and then immediately sell at the current market price. If the trader's hunch is correct and the XYZ drops dramatically in value, he can then lock in his profit by buying the shares back and then returning them back to the broker. In other words, he is selling high and then buying back low.

Here is a numerical example, XYZ is currently worth $20.00 per share. The short seller short sells 100 shares to initially gain $2000. After awhile, XYZ drops to $10 per share. He then buys back the 100 shares, which costs him $1,000. So his total gain from short selling XYZ is $1000 ($2000 - $1000).

The risky aspect of short selling is that your gains are limited to what you originally short sold the shares, but your losses are theoretically unlimited. For example, since the lowest value that XYZ can get to is $0, the trader's maximum gain is $2000. However, since there is no theoretical limit to how high a stock can rise to (consider the extreme case of class A shares of Berkshire Hathaway, which go for over $100,000 per share), you can lose a lot if you do not close out positions that go against you.

In what ways has computer technology negatively impacted society? How has it positively?
I am writing a synthesis argument paper for a class and the topic is whether computer technology has had more of a negative impact or a positive impact on society.
I am trying to make a list of both positive and negative impacts and am in need of some more ideas. What do you think?

Hi,

Positive:
i) reducing cost / number of staff needed.
ii) Reducing amount of hardware (printers) due to LAN networking.
iii) Fun - games, Internet, music, graphics.
iv) Communication. More ways to interact globally.
v) Education - access to info for research.
vi) 3rd world - cheaper to provide laptops thean to send books over (OLPC, etc)..

Negative:
i) Hardcore porn industry (including child porn)
ii) Hackers, ID fraud and spoof websites,
iii) Virusses, spam and trojans.
iv) Cyber-bullying and cyber-stalking.
v) People unable to interact ‘in person’.
vi) Online gambling.

Hope these help!

Law’

Do we simply dismiss anything that might disagree with the bibles teachings when it comes to the Science field?
This is being debated in Florida and I feel as though I'm living in a fairy tale.
I understand what each and every one of you are saying and agree, however this is not just happening in Florida. I by no means am against the Bible but in my opinion it should not be taught side by side in a Science class.

Well, if you allow teaching that the bible says the earth and its history derives from a certain process under a certain time frame, then you have the obligation to also teach what other religions say about the formation and history of the earth, in my opinion.

Ancient greek mythology of origins, native american origin stories, and so forth. Of course, this brings in weeks upon weeks of teaching, so there will really be no science taught in that particular course, so I guess calling it a science course would be misleading at best, then, wouldn't it.

I think that these people should get their religion out of my face and stop trying to have it taught to my kids. They also need to recognize that in the early stages, science was used to try to prove the marvels of god's creation and the way that god did the things that was said in the bible, only to discover that the evidence was inconsistent with the bible stories. A lot of early modern scientists were very religious and took the bible literally, only to conclude that either their senses were wrong or the bible was, which has led us to the point now where most scientists disregard the bible as a source of knowledge respecting how reality works.

Doesn't detract from its utility as a source of inspiration in other matters, just demonstrates that as far as presenting a comprehensive system to explain the workings of the world, the bible is a poor source of information.

I found animal science in major of agriculture, and zoology in major of biology. They sound like the same…
Is animal science major for being a vet?

Animal science deals with domesticated animals - breeding, care, etc. It is a kind of applied zoology. Zoology covers the animal kingdom in general, from a purely biological perspective. Of course that is a very large field of study, so there are many specialized fields within zoology, like mammalogy, ornithology, herpetology, icthyology, entomology, etc.

I’m a freshman, and today we began working on our science fair project. I’m thinking about testing the affects of different organic/natural additives on a common plant (carbon, sulfur, alcohol, etc.). I know this is a vague thought, but is it too simple? Just right? Are there any tips that you have for me? Also, I know that I have to determine what type of plant and the different additives i will use. Please comment and critique tremendously. Thank you!

Try adding different compounds of different acidity/basicity to see how different plants are affected. Do not add carbon or sulfur as they are not classed as “organic”. They are classed as “basic elements” and are only part of the molecules in organic additives. Also, do not add alcohol as it is primarily not organic. Organic refers to living things such as carbohydrates.

So try different acids and bases that are found in different plant foods.

My original idea was to use RFID tags but they dont allow me to gauge the distance. Is there any other technology that works in the same way but would show me the distance?

use radio frequency
the received power decreases with increase in distance
at the transmitter callibrate it to transmit signals at a constant power level
at the receiver use two circuits
one to receive the data
other to calculate the received power level

or try bluetooth but i dont know how you can calculate the distance . the bluetooth system will be integrated

How can environmental science help solve crime cases and what areas of forensics does it relate to?

Forensic scientists do NOT test the DNA of plants! That's just something that CSI made up. You could determine that it was the same species of plant (by morphology, etc.) but that is as far as you would go with that.

I would say toxicology most. There is an entire area of forensic environmental toxicology in which people study the toxins that are put into the environment in industry.

Soil comparisons too. This is a huge part of trace chemistry.

I'm sure that there are more areas that it relates, but it's the only things I can think of off the top of my head.

I need a book that covers all the topics of theoretical computer science, a sort of bible reference for theoretical computer science. Thanks!

Good luck finding that. To cover that range with any depth would mean tens of thousands of pages. The reference is the closest I can think of, and even its four volumes don't cover the field.

saw it internet, want to know the science behond why it happens. As detailed as possible please.

you want it? you got it!

the mythbusters episode ftw!

http://www.youtube.com/watch?v=kMXPOqovSBs

I have to identify what type of science is photography for my little project for school. My project consists of experimenting with the angles, shadows, and position of my camera to receive different shadows, effects, etc. Help PLease! Is it just photography itself or something totally different?

It is an optical science.
http://johnlind.tripod.com/science/scienceframe.html