I have A question

And those people would be misinterpreting evidence based on church windows and do not take into consideration antique telescopic lenses which would have lost all their clarity if glass did indeed flow.

The Victorian church window thing is likely wrong considering that ancient Egyptian glass figurines aren't puddles on the floor, but it still doesn't rule out the possibility that glass flows at an even slower imperceptible rate.

The question whether glass is truly a liquid or not is a matter still in debate in academic circles (some have even gone so far as to classify glass as a fourth state of matter which sits between solid and liquid).

However it is not doubted that glass's molecular structure is loosely connected similar to liquid, and that we see through it because of the gaps between atoms.

How the hell Tom makes it through daily life when he keeps changing rules, definitions and anything else to suit his immediate needs is beyond me.  If air is not transparent, I would like Tom to name one thing that is.

How the hell Tom makes it through daily life when he keeps changing rules, definitions and anything else to suit his immediate needs is beyond me.  If air is not transparent, I would like Tom to name one thing that is.

Only empty space is transparent. There is no such thing as transparent matter.

Quote from: Mr Pseudonym on February 03, 2010, 03:33:57 AM

How the hell Tom makes it through daily life when he keeps changing rules, definitions and anything else to suit his immediate needs is beyond me.  If air is not transparent, I would like Tom to name one thing that is.

Only empty space is transparent. There is no such thing as transparent matter.

Air is transparent, as it allows sunlight to passthrough it allowing plants to undergo photosynthesis. The same can be said for water and a host of other objects described as matter.  Sunlight also allows plants in water to grow.

Wiki definition "Transparency and translucency, the physical property of allowing the transmission of light through a material"

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The various kinds of atoms and molecules that make up the air (Nitrogen, Oxygen, CO2, etc.) are mostly transparent because they don't absorb much visible light.

Atoms aren't transparent.  

Not even even the atoms in a pane of glass are transparent.

You can only "see" something if visible light is absorbed by or reflected off of a medium.  If you have a gas of atoms that have no absorption lines in the visible spectrum, light will pass right through the gas mostly undisturbed, though as I mentioned above a very small portion of the light will scatter off the atoms.

You're thinking about matter the wrong way here.  Atoms aren't tiny little billiard balls of a certain color floating around in space.

Quote from: Mr Pseudonym on February 03, 2010, 03:33:57 AM

How the hell Tom makes it through daily life when he keeps changing rules, definitions and anything else to suit his immediate needs is beyond me.  If air is not transparent, I would like Tom to name one thing that is.

Only empty space is transparent. There is no such thing as transparent matter.

*sigh*  Tom, if matter allows light to pass through unobstructed, then, by definition, it is transparent.  You also have to realize that transparency is also a function of the wavelength of electromagnetic energy.  Skin and other soft tissues are relatively transparent to certain wavelengths while bone is opaque to the same wavelength.  This is how x-rays work.  By the same token, air is transparent to visible wavelengths, but opaque to far ultraviolet.

Quote from: Tom Bishop on February 03, 2010, 03:35:54 AM

Quote from: Mr Pseudonym on February 03, 2010, 03:33:57 AM

How the hell Tom makes it through daily life when he keeps changing rules, definitions and anything else to suit his immediate needs is beyond me.  If air is not transparent, I would like Tom to name one thing that is.

Only empty space is transparent. There is no such thing as transparent matter.

*sigh*  Tom, if matter allows light to pass through unobstructed, then, by definition, it is transparent.  You also have to realize that transparency is also a function of the wavelength of electromagnetic energy.  Skin and other soft tissues are relatively transparent to certain wavelengths while bone is opaque to the same wavelength.  This is how x-rays work.  By the same token, air is transparent to visible wavelengths, but opaque to far ultraviolet.

It's also opaque to far-IR and mm radio radiation.  I would imagine that the main evolutionary reason our eyes are sensitive to the range of wavelengths that they're sensitive to is because of the fact that it's one of the few bands of radiation short of radio that the atmosphere is transparent to.

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The various kinds of atoms and molecules that make up the air (Nitrogen, Oxygen, CO2, etc.) are mostly transparent because they don't absorb much visible light.

Atoms aren't transparent. 

Not even even the atoms in a pane of glass are transparent.

Where did he say they were transparent? He said they were mostly transparent. Which they are, since atoms are mostly made up of empty space.

lrn2reeeeeeeed

Quote from: Tom Bishop on February 02, 2010, 11:04:11 PM

Quote

The various kinds of atoms and molecules that make up the air (Nitrogen, Oxygen, CO2, etc.) are mostly transparent because they don't absorb much visible light.

Atoms aren't transparent. 

Not even even the atoms in a pane of glass are transparent.

Where did he say they were transparent? He said they were mostly transparent. Which they are, since atoms are mostly made up of empty space.

lrn2reeeeeeeed

I don't think that the empty space is what makes atoms transparent.  Rather it would be the way that the atoms interact with photons of different wavelengths.  Certain wavelengths will be absorbed, others will be absorbed and emitted while others will have no interaction at all.   This where opaque, translucent and transparent are pretty much defined.

Quote from: d00gz on February 03, 2010, 08:55:42 AM

Quote from: Tom Bishop on February 02, 2010, 11:04:11 PM

Quote

The various kinds of atoms and molecules that make up the air (Nitrogen, Oxygen, CO2, etc.) are mostly transparent because they don't absorb much visible light.

Atoms aren't transparent.  

Not even even the atoms in a pane of glass are transparent.

Where did he say they were transparent? He said they were mostly transparent. Which they are, since atoms are mostly made up of empty space.

lrn2reeeeeeeed

I don't think that the empty space is what makes atoms transparent.  Rather it would be the way that the atoms interact with photons of different wavelengths.  Certain wavelengths will be absorbed, others will be absorbed and emitted while others will have no interaction at all.   This where opaque, translucent and transparent are pretty much defined.

This.  Thank you.  Though scattering, as I've said repeatedly, does play a part (and is actually used quite extensively in spectroscopy, most notably in Raman scattering), albeit a small part.

Quote from: LiceFarm on February 02, 2010, 01:55:44 PM

I remember when you did it. It was really not funny. You should do it again some time. Only funny.

I don't see how you would be able to "remember" something I did years ago when you weren't here, but I agree, it wasn't very funny.  Still, at least I grew out of it, unlike you.

Newsflash for the thick: I'm not pretending to be a flat earther.

Nor is Lord Excalibur. He is a well known flat earther who holds meetings with like minded people every month. I believe he has also organised a flat earth parade to bring to attention the plight of the opressed FE community. Just because he is not active online does not mean he is not a flat earth believer.

Quote from: Saddam Hussein on February 02, 2010, 02:12:37 PM

Quote from: LiceFarm on February 02, 2010, 01:55:44 PM

I remember when you did it. It was really not funny. You should do it again some time. Only funny.

I don't see how you would be able to "remember" something I did years ago when you weren't here, but I agree, it wasn't very funny.  Still, at least I grew out of it, unlike you.

Newsflash for the thick: I'm not pretending to be a flat earther.

I was referring to being a troll in general.

Nor is Lord Excalibur. He is a well known flat earther who holds meetings with like minded people every month. I believe he has also organised a flat earth parade to bring to attention the plight of the opressed FE community. Just because he is not active online does not mean he is not a flat earth believer.

Like this.

Quote from: Mr Pseudonym on February 03, 2010, 03:33:57 AM

How the hell Tom makes it through daily life when he keeps changing rules, definitions and anything else to suit his immediate needs is beyond me.  If air is not transparent, I would like Tom to name one thing that is.

Only empty space is transparent. There is no such thing as transparent matter.

[semantics] Bishop needs to get to grips with the distinction between transparent and invisible. Bishop is wrong. Air is transparent, but not invisible. Empty space is invisible.[/semantics]

Certain parts of the light spectrum make it through the upper levels of the earth. Sensors placed beneath the surface can detect these spectrums.

Certain parts of the light spectrum make it through the upper levels of the earth. Sensors placed beneath the surface can detect these spectrums.

haha, so even earth is transparent to invisible-to-human-eye wavelengths? I think you lose, Bishop.

Quote from: Saddam Hussein on February 02, 2010, 02:12:37 PM

Quote from: LiceFarm on February 02, 2010, 01:55:44 PM

I remember when you did it. It was really not funny. You should do it again some time. Only funny.

I don't see how you would be able to "remember" something I did years ago when you weren't here, but I agree, it wasn't very funny.  Still, at least I grew out of it, unlike you.

Newsflash for the thick: I'm not pretending to be a flat earther.

Nor is Lord Excalibur. He is a well known flat earther who holds meetings with like minded people every month. I believe he has also organised a flat earth parade to bring to attention the plight of the opressed FE community. Just because he is not active online does not mean he is not a flat earth believer.

Thank you for the support my friend

Quote from: Mr Pseudonym on February 03, 2010, 03:33:57 AM

How the hell Tom makes it through daily life when he keeps changing rules, definitions and anything else to suit his immediate needs is beyond me.  If air is not transparent, I would like Tom to name one thing that is.

Only empty space is transparent. There is no such thing as transparent matter.

Tom,

From your explanation, how come some types of glass are transparent to visible light, but not to infra red or UV? 

Are we saying here that glass atoms reach out into empty space and grab light of the wrong frequency ?

Tom,

From your explanation, how come some types of glass are transparent to visible light, but not to infra red or UV? 

Are we saying here that glass atoms reach out into empty space and grab light of the wrong frequency ?

Some wavelengths are physically bigger than others and are unable to pass through the cracks.

For example, the screen on your microwave is built so that the spacing of the metal dots (or spacing of the embedded screen) is close enough to each other that the microwave screen allows visible light in and out for viewing pleasure, while at the same time preventing dangerous microwaves from getting out.

Some wavelengths are physically bigger than others and are unable to pass through the cracks.

For example, the screen on your microwave is built so that the spacing of the metal dots (or spacing of the embedded screen) is close enough to each other that the microwave screen allows visible light in and out for viewing pleasure, while at the same time preventing dangerous microwaves from getting out.

But how does some glass allow visible light through but not UV light?  In principal it should, because UV has a shorter length.

But how does some glass allow visible light through but not UV light?  In principal it should, because UV has a shorter length.

What glass doesn't allow UV light to pass through?

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But how does some glass allow visible light through but not UV light?  In principal it should, because UV has a shorter length.

What glass doesn't allow UV light to pass through?

Sunglasses. Camera filters. Some types of glass used in conservatories.

Quote

But how does some glass allow visible light through but not UV light?  In principal it should, because UV has a shorter length.

What glass doesn't allow UV light to pass through?

All glass?
http://www.pgo-online.com/intl/katalog/curves/whitefl_kurve.html
http://www.spacewx.com/Docs/ISO_PRF_21348_e.pdf

See 6.5.5- 6.5.8


Note that the above does not involve the use of coatings.........
Also his glasses, though worn at night, they would (should) block the transmission of UV.  
Though I should warn you; dont masquerade with the guy in shades... Oh No!


Also, don't switch the blade on the guy in shades, Oh no!

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But how does some glass allow visible light through but not UV light?  In principal it should, because UV has a shorter length.

What glass doesn't allow UV light to pass through?

See http://en.wikipedia.org/wiki/Ultraviolet.

"Ordinary window glass passes about 90% of the light above 350 nm, but blocks over 90% of the light below 300 nm"

Please can you explain how this is possible.

Some wavelengths are physically bigger than others and are unable to pass through the cracks.

For example, the screen on your microwave is built so that the spacing of the metal dots (or spacing of the embedded screen) is close enough to each other that the microwave screen allows visible light in and out for viewing pleasure, while at the same time preventing dangerous microwaves from getting out.

Exactly right well put bishop

Quote from: Tom Bishop on February 04, 2010, 02:55:05 AM

Some wavelengths are physically bigger than others and are unable to pass through the cracks.

For example, the screen on your microwave is built so that the spacing of the metal dots (or spacing of the embedded screen) is close enough to each other that the microwave screen allows visible light in and out for viewing pleasure, while at the same time preventing dangerous microwaves from getting out.

Exactly right well put bishop

Except that he has it backwards (big surprise).  Those aren't metallic dots, they're holes in a metallic grid.

what ever, its still how the things work. It's a wonder how you people can stand to be around each other for so many years with out occasionally patting people on the other sides back and saying yes you where right about something and I was misinformed. Insted you just resort to bitching about the other person some more. How is this stuff inline with the questioning?

what ever, its still how the things work. It's a wonder how you people can stand to be around each other for so many years with out occasionally patting people on the other sides back and saying yes you where right about something and I was misinformed. Insted you just resort to bitching about the other person some more. How is this stuff inline with the questioning?

because FETs are never right and REers are never [within reason] wrong.