SCIENCE TOPIC - Ask here what you don't know!

[CooperO 7,956]

Well it is quite logical if you come to think of it.. Because of the earth spinning around the sun for example.

[latvian_killer 31]

Who can answer these questions:

What is Bagel?

What is CIH?

What is Mellisa?

What is nimda?

What is ILOVEYOU?

 

Answer to these questions is one,but you need to say what things did thes things.

Edited November 27, 2012 by latvian_killer

[CooperO 7,956]

http://www.youtube.com/watch?v=F5SF_pZ5eb0.

This is not a quiz, you know. This topic is to ask questions you don't know the answer to.

Edited November 27, 2012 by CooperO

[LiquidGold 1,370]

why does uranium refuse to decay when being observed

---

Have you ever seen a nuclear bomb go off in a film? Well that is uranium decaying

[LiquidGold 1,370]

 

 

5. what r the limits of computing

 

 

--- I said I would get back to you on this question, the limits of computing are finite, let me qualify that statement. At the moment the power of computers doubles every 18 months this is Moore's law, how ever the brains that be are working on Quantum computers, quantum deals with the very small particles including atoms. Making a working quantum computer using single atoms to make components is only theoretically possible at the moment but apparently the mathematics for them holds up to testing. So the limits of computers are that when we are able to manufacture transistors the size of one atom that will be the ultimate limit of any computer, I can not give you any idea of how fast a computer will be able to do calculations as no one knows. I hope this answer is not to simplistic, but I had to " phone a friend option" as "asking the audiance" was used up already

[LiquidGold 1,370]

moblie / cellular / handi phone companies why do they not garantee to deliver any text messages you send? I frequently get a text and all it says is /missing text/ like they are laughing at you

[Psycho 586]

 

New elements will most definitely be discovered.We can predict them with our periodic table.We can also see its mass and how many shells it will have.Thats the power of science.To predict something that doesn't exist.

how can you predict it if you already know what it is?

[r_kilaz0 10]

because science, thats why

[latvian_killer 31]

http://www.youtube.c...?v=F5SF_pZ5eb0.

This is not a quiz, you know. This topic is to ask questions you don't know the answer to.

 

got from me or know yourself?

[CooperO 7,956]

got from me or know yourself?

 

What do you mean?

[r_kilaz0 10]

why do humans yawn, it doesnt help me feel any less sleepy

[MusicJam19 737]

why do humans yawn, it doesnt help me feel any less sleepy

No-one knows for sure. Read this: http://kidshealth.org/kid/talk/qa/yawn.html

[Aero.v2.0 1,456]

Racos321

How do we calculate the area of a circle?

How do we calculate the volume of a sphere?

 

not sure if this was answered, but the area of a circle is radius squared times pie. The volume of a sphere is as follows. A sphere is 2/3 of a cylinder. So accordingly, the volume of a sphere is 2/3 of a cylinder. To find the volume, take the length of the circle, and the width of the circle. What you are going to have to do is find the area of the middle, times the height, divided by 1/3, and multiplied by 2. Simple :P

[r_kilaz0 10]

my head hurts

[Aero.v2.0 1,456]

live with it :P

[Psycho 586]

What would happen if biological weapons where being used on a frequent basis?

 

 

And what chance do we have of surving a biological weapons?

 

 

And if a new untreatable epidemic where to spread how can we survive?

[r_kilaz0 10]

i have question is global warming a myth or not

[LiquidGold 1,370]

i have question is global warming a myth or not

---

lets start at the beginning-- firstly weather records have only been kept for the last 300 years approximately, so what data we have is quite limited in terms of statistics given the length of time weather changes have taken place here on earth. early on the atmosphere did not even contain much oxygen at all and this only changed with the first origins of any living thing which was basically green ooze or chlorophill, slowly these plants gave off oxygen and ingested enough carbon dioxide so the atmosphere changed to what we have today. How do we know what the weather was like before weather records were recorded, well scientists started looking at gymnospore records these are plants that use seeds to reproduce and they can extrapolate from where these seeds were found, as to what geological range they are found in now and to when the seeds were made to give an idea of what the weather conditions may have been like way back in the past, as different plants like different temperatures and different types of rainfall patterns. If seeds from a plant that like much sunlight are found in a very cold climate then you can guess that at some point that part of the world may have been warmer at some point.

There is another tool that is used and this is dendrochronology or the study of tree growth rings at the moment there are proven and continuous record for these rings back 11,000 years. Why is this important, well each ring in a tree gives us an idea of good and bad growth years for trees in good climatic years trees grow more and the growth rings are wider, in poor climatic years they are narrower, so we have another way of best guessing what the climate may have been like, also trees act like a sponge, just as your own hair can be used to find out what you have eaten years later if your hair is long, trees take up food and carbon and any other things floating about at the time and chemical analysis of the sugar and lignin or lignen gives another idea of how the atmosphere has changed over time.

Another important study is Arctic ice records, as snow falls and turns into ice the way it is formed (by sublimation) means that it traps gasses freely available at the time it fell. Some ice flows are up to 2300 meters deep and so trapped gases from a very long time ago which can be studied by the Arctic survey teams by taking core samples.

There are many, many more factors involved in warming or even cooling of the atmosphere including but not exclusively, how near or how far we are from the sun, how much refelctivity the planet has (albedo - how much energy from the sun bounces off our planet), how much cloud cover there is, how much NOX ( Nitogen dioxide) SOX ( Sulphur dioxide) and COX (Carbon dioxide) there is in the atmosphere, how many trees are cut down each year compared to how many are planted and grown, how much stored sunlight is burned each year from fossile fuels - coal, natural gas etc, how much consumable goods are made each year and the manufacturing processes involved these are basically mans' or womans' influences on the atmosphere. There are natural things which will influence the balance particularly how active volcanoes are, how warm or cool the sea gets, and how much ice or snow there is at any given point more snow/ice means the reflectivity of the planet changes less ice less reflectivity so more sunlight will reach out inner atmosphere and then get trapped by the NOX SOX and COX in the atmosphere..I can go on and on but it seems pointless listing everything.

Anyway since all the brains got together many reports have been made some say global warming is happening , some say it is not happening, there is much misinformation floating about including what Al Gores pseudo documentary claimed.

I will say this, the ambient global temperature has risen 1 half of 1 degree since the the industrial revolution or over the last 150 ish years this may not sound much but it may have long term influences if you wish to see some we know about go here -->http://nsidc.org/arcticseaicenews/ This is a link to the Arctic sea ice and news data website.

There are other sensationalist things you may be able to see try and find a copy of a film called "The wind" by Julien Temple it was commissioned by green peace to highlight why we need offshore wind power (in the U.K.), it didn't make mainstream t.v. so may be hard to source, I have a copy on vhs somewhere.

If you wish to make further explorations into this issue I may be able to point you in some useful directions so you can make up your own mind, but it is a heavy weight issue with a palimpsest of human decisions before us, UNESCO say that both rich and poor counties contribute to this issue and in particular they raise an interesting question- why should decision makers who live in comfortable surroundings care if this issue is true or not they will be long gone before it becomes a problem. If it is true or not, we only have one life raft on which to live with finite resources. What would be the most sensible thing to do ignore it or do something about it.

Edited December 14, 2012 by LiquidGold

[chiyaProgramer 1]

Who can answer these questions:

What is Bagel?

What is CIH?

What is Mellisa?

What is nimda?

What is ILOVEYOU?

 

Answer to these questions is one,but you need to say what things did thes things.

malwares B) you forgot the CODERED series , damn forgetting morris and insulting him . forgetting to mention morris worm :blink:

[Contaminated 129]

How come "le" isn't an English word any more?

Atheists: 0

Christians: 0

Le French: 1