EM Lecture Slides
... studied the properties of Electricity and Magnetism. He
took a mathematical approach. He published his first
scientific paper when he was 15 years old.
The four mathematical equations Maxwell produced are
ranked with Sir Isaac Newton's laws of motion and
Albert Einstein's theory of relativity as the ...
LIGHT AND COLOR
... UV (suntan, sunburn)
IR ( skin can detect IR)
Microwaves and Radio Waves
Long Term exposure, Cell phones
and Power Lines?
Active learning in intermediate optics through
... Imagine that you have a material in which the index of refraction depends upon the polarization of the light.
Suppose that for polarizations in the y-direction the index of refraction is 1.31, while for polarization in the xdirection is 1.30. A beam of 532 nm linearly polarized light is incident upo ...
Metamaterials and the Control of Electromagnetic Fields
... component of the field. Surfaces of negatively refracting materials are heavily decorated with resonant states under
the conditions specified by (7) these states are almost degenerate at nearly the same frequency and amplification
takes place by stimulation of these resonances. It is a relatively s ...
Atoms and Energies
... voltage applied to gate; no current when no
voltage applied to gate
This NON-LINEAR effect is necessary for fast
Must have one signal affecting output state (other
... • Light waves are traveling may
or may not be parallel to each
other. If direction are randomly
related to each other the light is
unpolarized / non polarized. If
parallel to each other is called
... Visible light contains radiation in the wavelength range 4000Å (violet)7000Å (deep red). A material that appears red in transmission light absorbs all
the wavelengths of the visible light in the range 4000-6500Å and transmits
wavelengths >6500Å. This material must belong to semiconducting class of
Reading Guide—Chapter 6
... Read section 27.3. List 5 types of electromagnetic waves. Circle the ones on your list you use
on a regular basis.
Magneto Optic Current Transformer.pdf
... No risk of fires and explosions.
No need to use metallic wires to transfer the
signal and so simpler insulation structure than
conventional current transformer.
High immunity to electromagnetic interference.
Wide frequency response and larger dynamic
Low voltage outputs which are compatible w ...
Light Practice Test
... Give the name of a type of electromagnetic radiation with a wavelength that is too long for humans to
... Propagation of light* in a simple dielectric
Review. Maxwell’s equations in matter take
this form ...
Optical fields, as complicated as it may be to grasp
... Optical fields, as complicated as it may be to grasp fully the
understanding of, are electromagnetic radiations of frequencies to
which the human eye is sensitive. These lie between 10 14 to 1016 Hz.
The high frequency translates into a very small wavelength. This in turn
means that optical fields s ...
Shaping the color - University of Guelph
... • When made with the right materials and structure they
can be considered to be the optical analogue of the
semiconductor enable them to be used as active
materials in optical transistors, diodes, and other devices.
Transformation optics applies metamaterials to produce spatial variations, derived from coordinate transformations, which can direct chosen bandwidths of electromagnetic radiation. This can allow for the construction of new composite artificial devices, which probably could not exist without metamaterials and coordinate transformation. Computing power that became available in the late 1990s enables prescribed quantitative values for the permittivity and permeability, the constitutive parameters, which produce localized spatial variations. The aggregate value of all the constitutive parameters produces an effective value, which yields the intended or desired results.Hence, complex artificial materials, known as metamaterials, are used to produce transformations in optical space.The mathematics underpinning transformation optics is similar to the equations that describe how gravity warps space and time, in general relativity. However, instead of space and time, these equations show how light can be directed in a chosen manner, analogous to warping space. For example, one potential application is collecting sunlight with novel solar cells by concentrating the light in one area. Hence, a wide array of conventional devices could be markedly enhanced by applying transformation optics.