What is Cotton effect? Chemistry...Based in context to ORD and CD?

Answer 1

it's so named for Cotton who is a god of inorganic chemistry. google his name and you'll find all sorts of info

Answer 2

"If linearly polarized light passes through an optically active medium (for example an optically
active substance in solution), the plane of polarization, i.e. the plane in which the electrical
field vector is oscillating, is rotated by an angle α. The angle is proportional to the thickness
and the concentration of the optically active component. The angle is also dependent on the
wavelength of the linearly polarized light. The phenomenon is therefore called optical rotatory
dispersion."
....
"The optical rotation can be positive (right rotating) or negative (left rotating). Direction and
angle depend on the wavelength. A chromophor with a positive Cotton effect causes a right
rotation at low frequency and a left rotation with higher frequencies. A chromophor with a
negative Cotton effect causes a left rotation at low frequencies and a right rotation at the
higher frequencies."

Answer 3

Chocolate