You also seem to lack a bit understanding of the difference between atoms and molecular matrix.

Guess I need to do some reading up.

 

Based on my research?

1) What is the mass density of gold? 19.32 g/cm^3

2) Mass of a single atom 3.27 x 10^-22

That's because 196.97 g/ Avogadro's constant 6.022 x10^23

3) 1 x 10^17???

The resit I can't comprehend anymore.. pls help..

 

Hmmm, I mean different.

Think of a glitter, a one glitter. Can you see a glitter in a far distance (say about 10 meters away)? But if they are packed together and they are many we can see that right?

Why in a 10x10x10 meter gold, can't we see atom? Unless there is only 10 atoms there, I can not understand it. In a 10m^3 gold,there are many atoms held together right?

Sorry for my bad understanding of atom .

You do see them, the effect of their reactions. Your analogy is actually a good one, just backwards, you just aren't taking the proper perspective here. If you see a tightly packed substance, like a sand castle from 30 feet away, you see a surface that does not actually represent what each individual grain of sand looks like. They come together to form structure. And that's what you notice. It's a VERY over simplified analogy, but I think you need to take a few steps back before you can really understand the answers to some of your questions. Atoms are so small that unless many are packed together, you cannot perceive their effects with the naked eye. The actual substance of atoms is very little. Forces attract and repel and create structure. Understand?

 

No, I still do not understand. I thought there are many atoms in one drop of water. Billions of atoms shall still not make us see it?

 

Part of the problem is the atoms are on the same scale as light. Photons and electrons are cousins, they interact and dance together. Given the outside of an atom is a electron shell you can see why a atom is too small for light to work.

 

No, I still do not understand. I thought there are many atoms in one drop of water. Billions of atoms shall still not make us see it?

All matter we know is a crystal matrix.
Elements align in specific patterns.

The matrix for instance can melt, and change shape.

Inidividual atoms don't break off.

For liquids viscosity is important.

All elements have 4 starts: solid, liquid, vapour, and plasma.

 

Part of the problem is the atoms are on the same scale as light. Photons and electrons are cousins, they interact and dance together. Given the outside of an atom is a electron shell you can see why a atom is too small for light to work.

The way how an electron jumps on the atomic rings, looses energy, and produced a photon is interesting.

After the emission, the electron is still there, but has lower energy? Is energy level of an electron kind of a spin? Or is the electron converted to a photon?

 

All matter we know is a crystal matrix.

Huh? So helium gas is a crystal matrix?

 

No, I still do not understand. I thought there are many atoms in one drop of water. Billions of atoms shall still not make us see it?

While it has been shown that the human retina does respond to a single photon, we don't perceive it as anything. When we "see" something, it is the result of huge numbers of photons reflecting off the object (or being emitted by it) repeatedly. Thus, even if photons reflected off a single atom the same way that it does a large collection of them, the number of photons that happen to reflect off it and find their way to our eye would be too few for us to perceive it.

But light doesn't interact with single, isolated atoms the same way that it does with collections of atoms, which is part of the dual nature of light in which it acts both as a particle and a wave. So one way of saying it is that human vision relies on light interacting with substances as a wave, which requires collections of atoms much larger than the wavelength of the light being used; but light interacts with individual, isolated atoms as particles.

 

Huh? So helium gas is a crystal matrix?

yes when it is solid. Solid matter can also have gas-like properties.

So why shouldn't gas have crystal matrix patterns? When a gas expands, it surges out thermic vibration from the environment.

 

yes when it is solid. Solid matter can also have gas-like properties.

So why shouldn't gas have crystal matrix patterns? When a gas expands, it surges out thermic vibration from the environment.

This makes zero sense. First, not all solids are crystalline. Second, helium is never solid. Third, ... oh, forget it.

 

So you're saying even if trillions of invisible atoms are packed together , it is still invisible. While in the other hand,trillions of tiny, yet visible, objects (e.g. glitters) are packed together, we can see it?

Is it invisible because at the first place, it is invisible? I mean... When one object is invisible at the first place, then even if you group a trillions of that object, it will still be invisible?

I also heard that the reason why atom is invisible is because its size is smaller than the wavelength of light?

Thank you for your consideration.

 

This makes zero sense. First, not all solids are crystalline. Second, helium is never solid. Third, ... oh, forget it.

Solid Helium is possible.
http://encyclopedia2.thefreedictionary.com/solid+helium

There is also something else: super-solid helium.
http://dabacon.org/pontiff/?p=1091

Polyvinylchloride is actually made from a gas: Vinylchloride.

 

Solid Helium is possible.
http://encyclopedia2.thefreedictionary.com/solid+helium

Yes, my comment was only valid at normal pressures. My bad on that one.

There is also something else: super-solid helium.
http://dabacon.org/pontiff/?p=1091

No one yet knows if there is such a thing as a "supersolid". We'll have to wait and see.

Polyvinylchloride is actually made from a gas: Vinylchloride.

And your point being....?

 

yes when it is solid. Solid matter can also have gas-like properties.

So why shouldn't gas have crystal matrix patterns? When a gas expands, it surges out thermic vibration from the environment.

Gases have no definite shape, especially not a crystal matrix...

 

So you're saying even if trillions of invisible atoms are packed together , it is still invisible. While in the other hand,trillions of tiny, yet visible, objects (e.g. glitters) are packed together, we can see it?

Is it invisible because at the first place, it is invisible? I mean... When one object is invisible at the first place, then even if you group a trillions of that object, it will still be invisible?

Not quite, the matter is visible because of the way it interacts with light(reflects/refracts/absorbs). Glass is a solid, yet is nearly invisible due to it's physical structure. Traditional glass, or SiO2, is only transparent because it is cooled rapidly before the structure can solidify into a crystal structure. Instead, rapidly cooling the SiO2 causes a random arrangement of molecules, a glass, whose interactions with light allow for light to pass through it relatively unimpeded. http://en.wikipedia.org/wiki/Silicon_dioxide#Quartz_glass

I also heard that the reason why atom is invisible is because its size is smaller than the wavelength of light?

For visible light, yes, however, this does not mean that atoms cannot be imaged with higher frequency radiation. The visible light you and I see with would not interact the same way at such close magnitudes as with atoms and the wavelengths of light.

 

the matter is visible because of the way it interacts with light(reflects/refracts/absorbs).

So what is the interaction between atom and light that we cannot see it?

 

Enough already!

You seem to think that there is a ten cent answer that is going to give you a hundred dollar understanding of a very complex topic.

Go take a few courses in modern physics and electromagnetic fields and waves and you will gain the understanding you seek.

 

Yes, my comment was only valid at normal pressures. My bad on that one.

No one yet knows if there is such a thing as a "supersolid". We'll have to wait and see.

And your point being....?

WBahn, you obviously have knowledge about the topic.

I wanted to point out that depending on the state of the matter, it will form structures like for instance a crystal matrix. For interaction with light no longer the individual atom is important, but the properties of the structures. I did not want to claim that all kinds of matter form a crystal matrix. Metals normally do as far as I know.

For sure there is a lot to explore and to research about these topics.

 

Yes, my comment was only valid at normal pressures. My bad on that one.

Technically, not true: PV = nRT . Solid helium can be a solid at sufficiently low temperatures at 'normal pressure' and constant volume, according to the Ideal Gas Law, which, I know is not universal, does capture the behavior of gases.


Edit:This is wrong... keep reading....