There are a number of ways of identifying elements using light. If you even look at something, you are using light. You can also heat elements to the point of glowing, and then analyse the specific frequencies that they emit, or, you can pass light through a cloud and see what specific frequencies are absorbed.
The atomic number is the number of protons in the nucleus of an element. It is what determines what kind of an element it is. When you change the number of protons in the nucleus, you change the type of element.
Atoms are considered the smallest particle of an element because if we subdivide an atom, we loose the chemical and physical properties of that element. The things that identify that atom as an atom of a given element will disappear.
Yes, the number of protons is always used to identify an element. This is also known as its atomic number.
You can identify an element at an atomic level by the amount of protons, electrons and neutrons are in one of it's atoms. To do this you would need an electron microscope. You can also test for things like electrical conductivity and magnetism.
The Universe - 2007 Biggest Things in the Universe 2-16 is rated/received certificates of: Australia:G
Carbon
There is a DC Universe where some things are reveres. The universe is called Multiverse.
base wide communication Established command and control element personnel trained and aware of sectors and zones
Gods Word. He spoke and it was, as he formed and he fashioned all things. Now we know that those words became flesh and a Man. They were Jesus our Savior and King.
For Heraclitus "PYR" or "fire" represented the primal element of the eternal and uncreated, ever changing, "ever-living" Cosmos. "All things are an interchange for fire, and fire for all things." This can be seen as his anticipation of the concept of plasma, as used in the plasma cosmology of Alfven, Peratt, and others.
Animals use their skin to identify food through the sense of touch. The skin is also use for other things like keeping the animals warm.
An depending on the element, it can be from a variety of different things.