Science & Mathematics - 9 September 2006

2006-09-09 01:59:03 · 4 answers · asked by john b 1 in Other - Science

2006-09-09 01:57:02 · 8 answers · asked by Hirni, the brain 3 in Other - Science

A STRAW FOR LIFE IS A WATER FILTER SYSTEM

2006-09-09 01:53:45 · 5 answers · asked by Mr Mayor! 1 in Other - Science

I mean think about it... marine mammals can close theirs all the way.. why do we then, have the muscles to open ours even more but not close them... I know crazy question but fun to ponder.

2006-09-09 01:50:11 · 8 answers · asked by r1ffy 1 in Zoology

i know some already but i need to know a bit more, i know that iraq is in the middle-east for sure but a tiny bit of turkey is in europe but most of it is in the middle-east, so is that a middle-eastern country?

2006-09-09 01:45:57 · 10 answers · asked by ??? ? 1 in Geography

2006-09-09 01:41:14 · 14 answers · asked by ranjith a 1 in Astronomy & Space

Oleksandr Sharkovsky Biography... need help... thats my maths presentation.. thanks anyone who could give me an answer ^-^

2006-09-09 01:37:11 · 6 answers · asked by guanlin_loi 1 in Mathematics

how to sense ac current at each half cycle and to regulate it.

2006-09-09 01:37:04 · 2 answers · asked by M A 1 in Engineering

2006-09-09 01:32:14 · 11 answers · asked by sweet_ s 1 in Earth Sciences & Geology

Let a, b, c be the lengths of the sides of a triangle. Show that:

a/(b+c) + b/(a+c) + c/(a+b) < 2

Now see if you can describe the shape of a triangle for which the above expression is very close to 2.

Any answers, and any explanations? Sorry about the wrong version posted here - I'm glad someone pointed out the notation was wrong. This is the correct version of the puzzle, which should make more sense!

Have fun with this one.

2006-09-09 01:23:18 · 5 answers · asked by Anonymous in Mathematics

2006-09-09 01:22:29 · 16 answers · asked by MAHENDER S 1 in Astronomy & Space

You walk into a pitch black room with a dresser. In the dresser there are 11 red socks and 22 blue socks.

What's the minimum number of socks you need to pull out to guarentee that you have one matching pair?

2006-09-09 01:19:56 · 13 answers · asked by jeepnuk 4 in Mathematics

2006-09-09 01:18:58 · 2 answers · asked by Anonymous in Biology

2006-09-09 01:18:26 · 6 answers · asked by ogre 1 in Engineering

trig homework
i made it this far
but i dont remember where cos = 0
:|

2006-09-09 01:17:56 · 6 answers · asked by efrat 2 in Mathematics

2006-09-09 01:16:25 · 30 answers · asked by Barnesy 1 in Biology

I live in south-east Ontario Canada.

2006-09-09 01:11:10 · 7 answers · asked by J RBumukas 1 in Zoology

Astronomy?
Bird watching?
Building robots?
collecting fossils?
..other (specify)

2006-09-09 01:09:18 · 8 answers · asked by river_kiana 1 in Other - Science

- advanced miniaturization is a key thrust area to enable new science and exploration missions
- ultrasmall sensors, power sources, communication, navigation, and propulsion systems with very low mass, volume and power consumption are needed
- revolutions in electronics and computing will allow reconfigurable, autonomous, "thinking" spacecraft.
-nanotechnology presents a whole new spectrum of opportunities to build device components and systems for entirely new space architectures
- networks of ultrasmall probes on planetary surfaces
- micro-rovers that drive, hop, fly, and burrow
-collection of microspacecraft making a variety of measurements.......

do you think there's always room in the budget for the space program? or..

while space travel is very important, lets get out economy back in check first!!!!

2006-09-09 01:03:17 · 13 answers · asked by river_kiana 1 in Astronomy & Space

2006-09-09 01:01:12 · 3 answers · asked by HARD CHARGER 1 in Chemistry

2006-09-09 00:56:19 · 9 answers · asked by Om T 1 in Astronomy & Space

Please explain individually... thank you!!! :D

2006-09-09 00:52:07 · 3 answers · asked by janelle11â?¢ 2 in Chemistry

Let a, b, c be the lengths of the sides of a triangle. Show that:

(a/b+c) + (b/a+c) + (c/a+b) < 2

Now see if you can describe the shape of a triangle for which the above expression is very close to 2.

Any answers, and any explanations?

Have fun with this one.

2006-09-09 00:50:18 · 9 answers · asked by Anonymous in Mathematics

2006-09-09 00:44:34 · 3 answers · asked by Neil S 4 in Astronomy & Space

does it get up
and if it does would it ever go back down

2006-09-09 00:41:10 · 15 answers · asked by niteshipper 3 in Medicine

A man said that
he saw a lake with three corners
each corner has three trees
each tree has three branches
on every branches he saw three birds ?

now the Question is how many living things are there?

2006-09-09 00:39:31 · 15 answers · asked by Thava 1 in Mathematics

I have a primer with its sequence for a gene of Arabisopsis whcih I miss the files. I want to know the gene to which this primer belongs. What kind of computer programme or website do you know from which I can retrive the name or the AGI number of the gene if I submit the sequence of the primer.

2006-09-09 00:39:16 · 3 answers · asked by behailubgu 1 in Biology

2006-09-09 00:39:10 · 17 answers · asked by pinhed_1976 6 in Zoology

2006-09-09 00:35:15 · 4 answers · asked by priyam 1 in Geography

Introduction
Comes over us occasionally, the feeling that what we are doing and saying have been said and done long ago, and the feeling of having been surrounded by the same faces, objects, and circumstances? Only 30 percent of the world population has never experienced Deja vu but, the rest have. I will explain experimental why this happens. Déjà vu is a weird, supernatural feeling of having experienced something that is in fact being experienced for the second time. If we hypothesize that the, understanding is actually of a repeated event, then déjà vu probably occurs because the first, experience was neither fully processed by the brain. Some think Deja vu is a way of your brain trying to tell you something or to give you a message. It’s more of a reaction to the familiar; perhaps we experienced it in a dream before or we’ve experienced it before, because we went through a similar experience beforehand, and your mind links it together so it seems we’ve experienced the exact same thing before. Or maybe our mind pick up something to fast so seem as if you are seeing twice.









Hypothesis
My theory of the scientific clarification of why déjà vu occurs is the human mind picks up a scene to fast. Once you pick the scene up to fast it is stored in the working section of your brain Or the Sensory memory of your brain to represent the image twice. The scene happened before. I will call this theory one and I’ll test it. Based on recent findings in other scientific studies, Studies of the hippocampus (a brain structure crucial to memory), of rapid eye movement (REM) sleep and of a brain wave called theta rhythm suggest that dreaming reflects a essential feature of the processing of memory. In particular, studies of theta rhythm in sub primate animals have provided an evolutionary clue to the meaning of dreams. They appear to be the nightly record of a basic mammalian memory process: the means by which animals form strategies for survival and evaluate current experience in light of those strategies. The survival of this process may explain the meaning of dreams in human beings. This means since animals think about strategies of survival most likely they will use those strategies this could be another possible explanation for déjà vu because the dream is stored in the working memory and never fully remembered but you still have a glance of the memory Enough that when the scène represents it self you can identify the scene. There is also another theory of déjà vu










Brain Activity in Memory
Positron emission tomography (PET) scans reveal brain regions involved in memory. Left, an encoding task (the initial processing of information into memory) activates the left prefrontal cortex. Right, an attempt to retrieve memories activates the right prefrontal cortex.
Courtesy of Dr. Shitij Kapur, MD, PhD; University of Toronto


Simplified Model of Memory
In this information-processing model of memory, information that enters the brain is briefly recorded in sensory memory. If we focus our attention on it, the information may become part of working memory (also called short-term memory), where it can be manipulated and used. Through encoding techniques such as repetition and rehearsal, information may be transferred to long-term memory. Retrieving long-term memories makes them active again in working memory.













Procedure
1 I turn on the TV,
2 I Turn In To a Show I Previously Recorded

3 I get a person to sit in a chair a look directly at the TV

4 While they are looking at the TV I tell them not to take their eyes

Of the TV and I fast-forward it maximum speed to the end.
5 I tell them to close their eyes and think about what they saw.

6 then I tell I will play another provisionally recorded show

7 I don’t fast-forward another show but just rewind the previsoly one

8 I ask them did they see any of the images twice.

9 If they responded no this theory of Déjà vu is false because their mind cant pick up the image to fast. If they say yes this could be a possible explanation for déjà vu.



Theory Two
1 At 5:00 I tap a person and slightly wake them out.


2 I percent and scene and remember exactly what im` wearing I make sure what the room looks like and all the rest of the details.


3 want the person is waken up o percent and image and I say something then I leave the room. (The image was probably presented in the working memory part of the brain or Sensory memory
And they would think it’s a dream)

5 Then At 10:00 I while percent the same exact image.

6 Later on in the day to not make it obvious I will ask the have they ever experience déjà vu and if they say yes I will ask the to discuss about their most recent case of déjà vu .


Results

For theory one the first person said they did not see any of the images twice that could mean they were not focusing on the TV hard enough and really paying The person I test was below age 15 this could be the reason people 15 of age and down according to studies most don’t get deja vu but the second person who was really focusing thought she saw the images twice this was the response I was looking for see she said the word thought the images probably was not fully processed my the brain but once you see the image twice you can relate to it because it was processed partly

2006-09-09 00:34:01 · 2 answers · asked by Debate 1 in Other - Science