I hope you enjoy this weeks subject. I hope it gives everyone a chance to enter, indoor outdoor, macro, close up, still life should all be possible whatever your fancy

---

The Best Photographer in the World 8th-10th Sep 06, 14th-15th Oct 06, 21st-22nd Oct 06, 20th-21st Jan 07
FREE BEER AND WINE - Click here

Interesting topic, oRGie. Oddly enough, time is one of the least understood things (what is it, where does it come from, etc.) and yet it's the one physical thing that we can measure the most precisely.

H.

---

My Gallery.

flickr gallery

Interesting, sure enough, but what measures time more acurately than a camera shutter? By it's very nature, a photographic image is a moment frozen in time, right down to a thousandth of a second.

We all know there are ways and means to convey the movement of time within a picture but the mechanics aspect should bring a new twist and get people thinking of something new, which is why I love doing this comp, it forces you out of the comfort zone and makes you look at things differently.

Great subject oRGie, I know that even if I can't come up with an image myself, plenty of people on here will, and that will provide the inspiration for me (and many others) to look for new pictures.

---

It's not my fault, honest!

My DCM Gallery

hevans:

Interesting topic, oRGie. Oddly enough, time is one of the least understood things (what is it, where does it come from, etc.) and yet it's the one physical thing that we can measure the most precisely.

H.

Time is an abstract concept not a 'physical thing'.   

Well hopefully I can make time this weekend! 

Sorry I couldn't resist! lol

---

Check out my DCM Gallery here

Be4ch:

hevans:

Interesting topic, oRGie. Oddly enough, time is one of the least understood things (what is it, where does it come from, etc.) and yet it's the one physical thing that we can measure the most precisely.

H.

Time is an abstract concept not a 'physical thing'.   

Well...as a physicist, time is very much a physical thing, being one of the (at least) 4 dimensions in which we inhabit, and the only one we perceive to travel in one direction.

As I was mentioning about time being the one parameter (perhaps a better choice of word) we can measure the most accurately (at least with the most advanced atomic clocks), distance is now measured in terms of time - the official definition of the meter is distance travelled by light in absolute vacuum in 1/299,792,458 of a second. Which is one heck of a shutter speed. All of the GPS systems use the time of flight for the signal from the satellite to pinpoint the location, so in this sense, time is being used to directly measure the distance from the GPS satellite to the receiver.

H.

PS. sorry for the digression, but I find this stuff quite fascinating.

---

My Gallery.

flickr gallery

hevans:

Be4ch:

hevans:

Interesting topic, oRGie. Oddly enough, time is one of the least understood things (what is it, where does it come from, etc.) and yet it's the one physical thing that we can measure the most precisely.

H.

Time is an abstract concept not a 'physical thing'.   

Well...as a physicist, time is very much a physical thing, being one of the (at least) 4 dimensions in which we inhabit, and the only one we perceive to travel in one direction.

As I was mentioning about time being the one parameter (perhaps a better choice of word) we can measure the most accurately (at least with the most advanced atomic clocks), distance is now measured in terms of time - the official definition of the meter is distance travelled by light in absolute vacuum in 1/299,792,458 of a second. Which is one heck of a shutter speed. All of the GPS systems use the time of flight for the signal from the satellite to pinpoint the location, so in this sense, time is being used to directly measure the distance from the GPS satellite to the receiver.

H.

PS. sorry for the digression, but I find this stuff quite fascinating.

Don't apologise, it is fascinating........As a non-physicist, still wouldn't call it a physical thing though

hevans:

Be4ch:

hevans:

Interesting topic, oRGie. Oddly enough, time is one of the least understood things (what is it, where does it come from, etc.) and yet it's the one physical thing that we can measure the most precisely.

H.

Time is an abstract concept not a 'physical thing'.   

Well...as a physicist, time is very much a physical thing, being one of the (at least) 4 dimensions in which we inhabit, and the only one we perceive to travel in one direction.

As I was mentioning about time being the one parameter (perhaps a better choice of word) we can measure the most accurately (at least with the most advanced atomic clocks), distance is now measured in terms of time - the official definition of the meter is distance travelled by light in absolute vacuum in 1/299,792,458 of a second. Which is one heck of a shutter speed. All of the GPS systems use the time of flight for the signal from the satellite to pinpoint the location, so in this sense, time is being used to directly measure the distance from the GPS satellite to the receiver.

H.

PS. sorry for the digression, but I find this stuff quite fascinating.

What Physicist can't work out is why time has an inbuilt direction, as the equations work both ways?

---

SK
The Best Photographer in the world 4th November - 5th November 2006 & 17th-18 November 2007
Oldboy’s Gallery

OldBoy:

hevans:

Be4ch:

hevans:

Interesting topic, oRGie. Oddly enough, time is one of the least understood things (what is it, where does it come from, etc.) and yet it's the one physical thing that we can measure the most precisely.

H.

Time is an abstract concept not a 'physical thing'.   

Well...as a physicist, time is very much a physical thing, being one of the (at least) 4 dimensions in which we inhabit, and the only one we perceive to travel in one direction.

As I was mentioning about time being the one parameter (perhaps a better choice of word) we can measure the most accurately (at least with the most advanced atomic clocks), distance is now measured in terms of time - the official definition of the meter is distance travelled by light in absolute vacuum in 1/299,792,458 of a second. Which is one heck of a shutter speed. All of the GPS systems use the time of flight for the signal from the satellite to pinpoint the location, so in this sense, time is being used to directly measure the distance from the GPS satellite to the receiver.

H.

PS. sorry for the digression, but I find this stuff quite fascinating.

What Physicist can't work out is why time has an inbuilt direction, as the equations work both ways?

Most of the speculation about the direction of time has to do with statistical liklihood and entropy. While it is possible for the salt and pepper, once mixed, to be randomly stirred such that they separate back, it's highly improbably. Hence the direction we percieve time travelling in is thought to originate from the direction of entropy (chaos) increasing.

As we live in a macro-verse (and I don't mean 1:1 f2.8 105 mm type ), our experiences are driven by the interaction of billions of things (atoms, molecules, grains of sand, cars, etc.) with each other, and this provides for the arise of entropy domination and (things end up where they're most likely to end up - take socks - they never come out of the washing machine together, they're most likely to end up apart from each other) the direction in which time appears to flow. At a highly microscopic level (sub atomic), the reactions work both ways (and for simple energy neutral experiments - pendulum swinging without resistance - the travel from left to right is the mirror of the passage from right to left).

To be more precise, though, it should be "What Physicist can't work out is why we experience time to have an inbuilt direction, as the equations work both ways?" It's a perception thing - time might easily flow in both directions, it's just that the statistical likelihood results in it only flowing in one direction.

H.

---

My Gallery.

flickr gallery

hevans:

Most of the speculation about the direction of time has to do with statistical liklihood and entropy. While it is possible for the salt and pepper, once mixed, to be randomly stirred such that they separate back, it's highly improbably. Hence the direction we percieve time travelling in is thought to originate from the direction of entropy (chaos) increasing.

As we live in a macro-verse (and I don't mean 1:1 f2.8 105 mm type ), our experiences are driven by the interaction of billions of things (atoms, molecules, grains of sand, cars, etc.) with each other, and this provides for the arise of entropy domination and (things end up where they're most likely to end up - take socks - they never come out of the washing machine together, they're most likely to end up apart from each other) the direction in which time appears to flow. At a highly microscopic level (sub atomic), the reactions work both ways (and for simple energy neutral experiments - pendulum swinging without resistance - the travel from left to right is the mirror of the passage from right to left).

To be more precise, though, it should be "What Physicist can't work out is why we experience time to have an inbuilt direction, as the equations work both ways?" It's a perception thing - time might easily flow in both directions, it's just that the statistical likelihood results in it only flowing in one direction.

H.

bloody hell - i've ended up in the wrong forum / time space dimension- i'll have to reset the Tardis !

---

BPITW 4 times

Ermm, yes?

Can't wait to see the pictures

---

It's not my fault, honest!

My DCM Gallery

A hearty congratulations to oRGie on winning this week, and on picking such an interesting subject for next week, made all the more baffling by all this talk of directional time.

Can the physicists answer one question, why does time slow down so much while I am at work? Have I actually reach the speed of light, where I understand (I think) this would happen naturally, or is some other force at work?

Anyway, in celebration of the subject I finally settled on a signature for now, and apt quote from the world's greatest physicist.

Good luck for the weekend all.

Kev.

---

"Knowledge knows a tomato is a fruit; wisdom is not putting it in a fruit salad."

My Gallery
BPITW 25-26 Aug 2007
BPITW (joint) 12-13 Jan 2008

I'm not a physicist or any other 'ist' but I tought a 'physical' thing had to have a mass (is that the right word?) and therefore time isn't a physical thing, at least in what I took to be the meaning of the original quote.

Completely off-topic, does everyone who makes a reply have to keep quoting the quoted quote of the quote above - we always end up with an extremely bloated thread the majority of which is irrelevent to the current comment and makes the page 10 times longer to scroll down. Can't we just quote the line we're referring to if indeed a quote is required?

---

Gallery

Blog

KLockhart:

Can the physicists answer one question, why does time slow down so much while I am at work? Have I actually reach the speed of light, where I understand (I think) this would happen naturally, or is some other force at work?

Sure, it's time dilation. The closer you are to a massive object the slower time progresses. In the case of work, I presume that you are under the influence of the most massively dense object known to man, "administratium", which due to it's imagination defying density results in a localised black hole that makes the progression of time slow down. Needless to say, this substance itself is attracted to itself, and so tends to collect in the minds of managers - making them even more dense and hence thicker than normal.

Hope this helps,
H.

---

My Gallery.

flickr gallery

Hee Hee Having a good chuckle at this lot and Cathus I totally agree. I thought adrenalin came into it...like during a car crash things tend to feel as though they're slowing down....but I've got a rush job on...panicing...full of adrenalin and the days whizzing by....eek

hevans:

- pendulum swinging without resistance - the travel from left to right is the mirror of the passage from right to left).

? A pendulum swinging without resistance wouldn't swing, it would go in a full circle.

 

Orgie...you've picked a tough one here. All the churches round here have tape recorded bells these days and digital clock workings....second I doubt I could get in a church without bursting into flames with the vampire type life I lead. I'll have to have a good think.

---

BPITW won 7 times.

My Flickr gallery