When a gas is heated the
atoms absorb heat energy and their electrons become energised. Highly
energised electrons jump to higher energy levels in the atom and when
they return back to their normal state give off this energy as light.
When we break up this light, by passing it through a prism, we get an
emission spectrum as shown below.
How is an emission spectrum different from an absorption spectrum?
How is an absorption spectrum and emission spectrum similar?
A hot gas cloud giving off its own light can best be analysed by its
White light from a distant star passes through a gas cloud before reaching Earth. When studying the light we can produce an
to study the elements present in the
