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If something appears black, that means it is absorbing strongly all of the different colours of the visible spectrum. Each of the colours correspond to a different energy of light and it is this energy that gets absorbed by electrons hopping up to higher electronic states in the material.
When something is black, that means the energy levels in the valence and the conduction band are many and close together. This could be a a semiconductor with a very small band gap or a conductor (which technically doesn't have a separate valence or conduction band- just one big fat band partially full of electrons).
Since there are many levels close together, electrons in the valence band can be excited to any number of many electron levels in the conduction band. Therefore these excitations can be of lots of different possible energies. This way the material can absorb all of the different energies of the different colours of visible light.
Of course the material may actually be a mixture of materials that each absorb a different colour. The overall effect is a black appearance.
What else can I help you with?
A scientific is a rule used to describe a pattern seen in nature not an explanation of why that pattern might occur.?
Yes
Is a scientific law a rule used to describe a pattern seen in nature not an explanation of why that pattern might occur?
Yes
What attempts an explanation of what is seen?
inferences
What is an attempt at an explanation of what is seen?
hypothesis
What pands looks like?
They are black and white, if you have ever seen a bear, they are in that body shape
What is the scientific explanation of comet's superstitious belief?
The superstitious belief surrounding comets stems from historical misconceptions and fear of the unknown. Before the scientific understanding of comets, they were often seen as omens or harbingers of doom due to their unpredictable appearance in the sky. However, today we know that comets are simply icy bodies that orbit the Sun, and their appearance is a natural occurrence with no supernatural significance.
Where can you get you black and tan pitbull?
I am not saying that a pitbull can't be black and tan but I never seen these color in a pitbull. I have seen tan dogs or black dogs. What I have seen is bullies that are tan and black. If you want a real pitbull, go for the body characteristics instead of the color.
How the black letters are seen?
they are seen by your eyes.
What is shorty fire?
it is a short fire.. not burning for long ^ Best answer I've seen for this question. I had suspected that the "burning" was a metaphor for something else, but this explanation makes more sense than any explanation of the metaphor I've seen.
Why do scientific use scientific models?
to look at something that cannot be seen with the human eye
What is the scientific explanation of meteor's supertitious belief?
There is none. People often don't know (now and in earlier years) and understand what they may have seen. We know about meteors and what they can do and how they look now, but long ago people thought that they were perhaps some sort of messages from above.
Define the word theory in a scientific sense and then in a more general sense?
1.rules and techniques: the body of rules, ideas, principles, and techniques that applies to a subject, especially when seen as distinct from actual practiceeconomic theoriesMany coaches have a good grasp of the theory of football but can't motivate players.2.speculation: abstract thought or contemplation3.idea formed by speculation: an idea of or belief about something arrived at through speculation or conjecture She believed in the theory that you catch more flies with honey than with vinegar.4.hypothetical circumstances: a set of circumstances or principles that is hypothetical That's the theory, but it may not work out in practice.5.scientific principle to explain phenomena: a set of facts, propositions, or principles analyzed in their relation to one another and used, especially in science, to explain phenomena
