Andrew Knapp Unit 7 Assignment 1. Refraction, Reflection, and Optics NT1310 2/18/2015 Refraction occurs when there is a change in direction of propagation of a wave due to a change in its transmission medium. Basically this is when light is bent due to the light waves passing through a substance such as water or glass. When this happens the light particles slow down or are absorbed into the material. A real life example of refraction would be when a pencil is placed halfway in a glass of water.
Liam Stephenson controlled assessment Introduction In my course work I will be looking at how the thickness of a converging lens affects the focal length. The factors involved in this experiment are: light, lens curvature, refraction and thickness of the lens, these will determine the focal length; the focal length is the length between the focus and the lens. Light-visible light is an electromagnetic wave in the electromagnetic spectrum The speed of light depending on the medium it is in, for example the speed of light is 300,000 km/s however when light travels through other medium such as water or glass the speed of light is slowed this is because water and glass is denser than a vacuum of air. Due to it being more dense and a change in speed, the direction of the wave will change this is
75uS is the time constant used for a high-pass filter to enhance the high frequency audio before transmission to help reduce noise upon reception. The PLL is the portion of the IC which locks your chosen transmission frequency to the crystal reference X1. The PLL portion also contains an oscillator circuit which works in conjunction with the external parts of D5 and the STUB (that weird trace on the back of the board). D5 is called a varactor diode, and is a special variety of diode that is connected backwards. As a reverse DC voltage is applied across the diode, its capacitance varies.
high melting point, hard, brittle, slightly soluble in water, conductor of electricity when melted or in solution Molecular solid - crystalline solid that has molecules arranged in a particular configuration. low melting point, generally insoluble in water, nonconductor of electricity. Metallic solid - crystalline solid that has atoms of metals arranged in a definite pattern. low to high melting point, malleable, ductile, conductor of electricity, insoluble in most solvents. Lesson 13.6 Changes of physical state: * necessary to draw a temperature-energy graph to see the change in temperature with a constant application of heat Heat of fusion - the amount of heat required to melt 1.00 g of substance.
It operates by the passage of a light beam (a stream of photons) through a sample and the measurement of that light intensity by the spectrophotometer detector. When the photon is encountered by the analyte, there is the chance of photon absorption which reduces the light intensity that originally entered the solution (5). The λmax value yield by the solution absorbance spectrum provides information on the electronic structure of the analyte as the wavelength at λmax is characteristic to that solution. The Beer’s lambert Law relates the amount of light absorbed to the concentration of the solution absorbing the light as the linear relationship (2): A = A(1%1cm) x c x l Where A represents the Absorbance of the solution at λmax, A(1%1cm) is the Absorbance Coefficient (mg-1cm2) , c represents the Concentration (mg cm3) and l is the path length of
Fiber Optic cabling is the other type of cabling solution we talked about. Fiber optics uses a glass or plastic core to transmit light between each connection. Because we are using light instead of an electrical current, fiber is immune electromagnetic to interference. Fiber is also able to send data at faster speeds and longer distances than copper cabling. Fiber is harder to work with and usually needs a specialized technician to install the connections.
Refraction occurs when waves change speed when changing media. Diffraction occurs when waves bend around a barrier. 81. ANS: At the node, destructive interference takes place. At the crest (antinode), constructive interference takes place.
Normally, net diffusion of both solute and water occurs until the concentration of water (and solute) is the same on both sides of the membrane (equilibrium). When the membrane is impermeable to solutes it creates a different result. In this situation, water diffuses from the side with lower solute concentration to the side with higher solute concentration. This continues until its concentration is the same on the two sides of the membrane. The movement of water leads to dramatic changes in the volumes of the two compartments.
3. What happens when two identical waves are in inverted phase? The peak of one wave will line up with the other wave’s trough. 4. When you phase shift a wave, what are you doing?
Sound travels faster through warm air than cold air because the molecules in warm air vibrate faster. Resonance is when one object vibrating at the same natural frequency of a second object forces that second object into vibrational motion which is forced vibration. An example would be if two tuning forks with the same natural frequency are set across from each other, then one tuning fork is hit with a rubber mallet which causes them both to vibrate because the surrounding air particles are set into vibratinoal motion. Frequency is the number of waves that pass a fixed place in a given amount of time. Picture: When a tuning fork is stamped 440 HZ means that the frequency and the pitch of that fork is 440 HZ.