AmBiTiOnS aNd CaReErS!! (25 Viewers)

[mikhail]

++ [ originally posted by MISS DUBAI ] ++
One newton iz defined as the force which gives a mass of 1kg an acceleration of 1m/second square,i.e=1N=1kg m/second square.

so,if m=1kg and a=1m/second square then F=1N.Substituting in F=kma ,we get k=1,so we can write...F=ma

this is newtons second law.when using it 2 points should be noted.
1- F,iz the resultant force causing the acceleration a .
2- F,must be in newoton,m in kilogram and acceleration in m/second square,otherwise k iz not 1.the law showz that awill be largest when F iz large and mass iz small

In other words,
F = m * a
Where F is force, m is mass and a is acceleration. When answering physics questions, brevity is life. :geek:

 

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[Asma]

++ [ originally posted by mikhail ] ++

In other words,
F = m * a
Where F is force, m is mass and a is acceleration. When answering physics questions, brevity is life. :geek:

thnx for the brief explination

 

[Martin]

++ [ originally posted by mikhail ] ++
:thumb: Sorry, it didn't occur to me that not everyone is conversant with enginerring abreviations.

That sounds pretty cool. You use a lot of Fourier series for that?

 

[gray]

Fourier Series for what? how'd that come into it?

 

[Martin]

For digital signal processing, well one of my teachers indicated that is what they use for it.

 

[sallyinzaghi]

dont talk bout physics or science or whatever. i'll be learning the stuff next year. i was looking forward to dropping physics but turned out i cant. i can only drop biology (which i did not)

well one of my ambitions is to work for discovery travel & adventure. i was thinking if they could have a programme where you would visit a football club's city and their stadiums etc.

of course, i would be the host

 

[Meow]

++ [ originally posted by sallyinzaghi ] ++
dont talk bout physics or science or whatever. i'll be learning the stuff next year. i was looking forward to dropping physics but turned out i cant. i can only drop biology (which i did not)

well one of my ambitions is to work for discovery travel & adventure. i was thinking if they could have a programme where you would visit a football club's city and their stadiums etc.

of course, i would be the host

Talking about biology.....God I love this subject. I used to do biology in a HK universaity before I got a scholarship to do speech pathology in Australia. I like biology and I was so damn good at it. I wish one day I can go back to finish the degree.

Gee...there's so much to do...so little time...

 

[mikhail]

++ [ originally posted by Alex ] ++
That sounds pretty cool. You use a lot of Fourier series for that?

Mostly Z-transforms, which is the discrete-time equivalent of a Laplace transform, which is related to the Fourier transform, which comes from Fourier series.

Oh, and congrats on confusing Gray.

 

[Martin]

*nodding along* no, haven't been there. Laplace is vaguley familiar but that's about it. really don't have the math skills one would like.

 

[mikhail]

++ [ originally posted by Alex ] ++
*nodding along* no, haven't been there. Laplace is vaguley familiar but that's about it. really don't have the math skills one would like.

Basically it goes like this (bear with me, it's not too hard):
If you represent two signals by looking at them in the time-domain, mixing them makes a big mess that you can't seperate, but if you just look at their frequency componants, they're easily seperated.

That's Laplace - transforming signals mathematical representation from time domain f(t) to their frequency domain, F(s). The Z-transform is the same, but with digital signals.

It's a cool mathematical trick - you can pick up a digital signal even if the noise amplitude is billions of times greater than the signal. Hence, satellite communication is workable.

 

[Dragon]

I HATE BIOLOGY, ITS THE WORST SUBJECT EVER

++ [ originally posted by HWIENIAWSKI ] ++


I only saw part of it, as I was gone most of the night, but the little time I did spend watching it was great!

The moon looked so pretty. I want to see a solar one, though. I remember the last solar one I saw, it was so awesome.

 

[Henry]

++ [ originally posted by fabiana-juve ] ++
I HATE BIOLOGY, ITS THE WORST SUBJECT EVER



The moon looked so pretty. I want to see a solar one, though. I remember the last solar one I saw, it was so awesome.

Lucky!! I've never seen a solar eclipse-I want to so badly!

 

[Henry]

++ [ originally posted by mikhail ] ++


Basically it goes like this (bear with me, it's not too hard):
If you represent two signals by looking at them in the time-domain, mixing them makes a big mess that you can't seperate, but if you just look at their frequency componants, they're easily seperated.

That's Laplace - transforming signals mathematical representation from time domain f(t) to their frequency domain, F(s). The Z-transform is the same, but with digital signals.

It's a cool mathematical trick - you can pick up a digital signal even if the noise amplitude is billions of times greater than the signal. Hence, satellite communication is workable.

Laplace is very helpful-it is used in alot of other things, including digitally enhancing astronomical photos

 

[gray]

++ [ originally posted by mikhail ] ++


Mostly Z-transforms, which is the discrete-time equivalent of a Laplace transform, which is related to the Fourier transform, which comes from Fourier series.

Oh, and congrats on confusing Gray.

sif i was confused Digital Signal Processing seems like a pretty broad term to me, and the only time I've seen the Fourier series used is just to express functions as sums of their cosine terms

 

[Dragon]

++ [ originally posted by HWIENIAWSKI ] ++


Lucky!! I've never seen a solar eclipse-I want to so badly!

Its so cool! its like the sun, but black. I read there are two in 2004 so I hope you'll get to see one!!

 

[gray]

++ [ originally posted by fabiana-juve ] ++
I HATE BIOLOGY, ITS THE WORST SUBJECT EVER

The moon looked so pretty. I want to see a solar one, though. I remember the last solar one I saw, it was so awesome.

About two months ago, Mars came as close to the Earth as it'll come for a long time. It looked quite fine :thumb:

 

[Dragon]

++ [ originally posted by gray ] ++


About two months ago, Mars came as close to the Earth as it'll come for a long time. It looked quite fine :thumb:

I always forgot to see it. I remember seeing it one day, but I was too drunk to remember :frown:

 

[gray]

ummm....it doesn't happen that often dude....once every few hundred years

Maybe every time you thought you could see it, those were the times u were drunk

 

[Dragon]

I know you cant see it that often. I mean, on summertime I remember watching the sky and being like ohh there's Mars!, but I dont really have a picture of it because as I said I was under the effect of alcohol.

 

[gray]

fabi, you're still in denial

Of course you're gonna see Mars everywhere if you're drunk :LOL: On July 13, Mars came closer than it has come to Earth for 60,000 years. That's what I mean by "not very often"