Dense wavelength division multiplexing (DWDM) is a technology that puts data from different sources together on an optical fiber, with each signal carried at the same time on its own separate light wavelength. Using DWDM, up to 80 (and theoretically more) separate wavelengths or channels of data can be multiplexed into a light stream transmitted on a single optical fiber. Each channel carries a time division multiplexed (TDM) signal. In a system with each channel carrying 2.5 Gbps (billion bits per
cellophane. This can further analyse if cellophane may have influenced the growth of the plants and the efficiency of the colours of light. In order to rid this error, instead of cellophanes, bulbs can be used as they will emit proportionally more wavelengths of light accordingly. Another variable that can be controlled is the day-night length and this error can be deducted also by using strong light bulbs greater than 25 watts to provide sufficient light to the mung beans specimens for 12 hours and
petunia class, and they yield a proliferation of 1 1/2 - 2" blooms that blanket the mounded plants.” (Harris, 2014). Plant Physiology Pigments are chemical compounds, which reflect and absorb only certain wavelengths of visible light. Because pigments interact with light to absorb only certain wavelengths, pigments are useful to plants and other autotrophs, which make their own food through the process of photosynthesis. (Unknown author,1997). Chlorophylls (refer to appendix) contain a porphyrin ring.
These results made sense because what was created inside the PVC pipes was a standing still sound wave, or a resonance wave. These kinds of waves have certain locations on its wavelength in order for the change in sound to be heard, which it usually half a wavelength. With this, the tuning fork is 83.3Hz and a usual wavelength is about 300Hz, 300/83.3 = 3.6 meters, which is about 4 meters (half = 2 meters). So for the change in sound to be heard, the pipes had to be about 2 meters in change according
energy does not need matter to propagate. We can characterize this energy by its wavelength -- the distance along a wave from one crest to another. Our eyes are remote sensors that are sensitive to light with wavelengths between approximately 0.4-0.7 microns (one micron is a millionth of a meter or one one-hundredth the diameter of a human hair). When light interacts with objects that are much smaller than the wavelength of the light, the light being scattered, rather than reflected. The electrons
Investigating the Link Between Wavelength of Light and Rate of Photosynthesis PROBLEM ======= I have been asked to investigate the link between wavelength of light and rate of photosynthesis. HYPOTHESIS ========== I predict that the order of best absorption in a plat to produce more bubbles will be blue, yellow, orange, red and finally green. I predict this because blue has the shortest wavelength which produces the most energy and there is
get converted into energy (144). Energy emitted fro... ... middle of paper ... ...in wavelengths of lights that human eye view the rainbow which is formed when light passes through the water droplets in the air. It then changes its path using the principles of refraction and different wavelength lights take a turn on a different angle. Other than the wavelengths of visible light, there are other wavelengths which our eye is unable to see. Infrared is one example that can be felt by skin. Infrared
effective index varies with wavelength not only due to of material dispersion, but also because varies with . In turn, it varies with wavelengths. These implicit variations of [ ] with gives rise to the second cause for chromatic dispersion, which is term waveguide dispersive [D37]. The total dispersive are combinations of the relative contributions of waveguide dispersion and material dispersion for a conventional single-mode fibers. The zero-dispersive wavelength may be shifted to a higher
these ingredients to a sugar called glucose and oxygen" (Campbell, 37). Pigments are substance that absorbs visible light. It depends on pigment of which wavelength of light is absorbed. The wavelength that reflects makes them appear to be colorful. Pigments are useful to plants because of the interaction with light to absorb certain wavelengths. During the lab, the analysis of spinach pigmentation during photosynthesis was performed to separate plant pigments with paper chromatography. The paper
INTRODUCTION Electromagnetic waves propagate in waves with several measurable characters, namely: wavelength, amplitude and speed frequency. The amplitude is the wave height, whereas the wavelength is the distance between the two peaks. The frequency is the sum waves passing through a single point in a single unit of time. The frequency depends on the speed of wave propagation. hence, the speed of the electromagnetic energy is constant. Electromagnetic energy has a very important role in everyday
this knowledge of one fourth wavelength to create our own demonstration. It does not only have to be done using wind, but can also be demonstrated using tuning forks. If the frequency of the tuning forks is known, then v=f(wavelength) can find you the length of your air column. Using a tuning fork of frequency 512 c/s, and the speed of sound is 332+0.6T m/s, temperature being, 22 degrees, substitute into the formula. Calculate 1/4 wavelength V=f(wavelength) wavelength=V/f =345.2 (m/s) / 512 (c/s)
person or animal. For example, when a guitar string is plucked, the string starts vibrating violently creating a pressure wave which travels through the medium and to an ear were the sound is heard. The equation of a sound wave is speed= wavelength x frequency. A wavelength is the distance between crest of a wave. Frequency is the rate per second of a vibrating constituting wave. Figure 3- sound wave Physics of instrument The instrument which will be evaluated the physics behind is the guitar. The guitar
directions, as they combine you can see a fixed pattern of nodes and anti-nodes. The electromagnetic spectrum is the range of electromagnetic waves, they vary in both frequency and wavelength. Radio waves have the longest wave length and lowest frequency, while Gamma rays have the shortest wavelength and highest frequency. Figure 1.d. shows an image of the electromagnetic spectrum. All electromagnetic waves are transverse and can all travel through a vacuum. They also require no medium.
human eye, and about 6 million cones compose the fovea. Rods, the more sensitive of the two to light, are not able to differentiate wavelengths, thus cannot detect color, and perceive shades of grey, black, and white. Cones, on the other hand, are of three types, containing particular pigments. They are categorized as red, blue, and green depending on to which wavelength they are most sensitive. These cones are what render color vision to humans. Red-green color blindness is not uncommon in the general
emission takes place. 2) Mirror image rule - The absorption spectrum is a mirror image of the emission spectrum for many fluorophores. This is known as the mirror image rule. 3) Stokes shift - Generally the emitted fluorescent light has a longer wavelength and lower energy than the absorbed light. This phenomenon is known as Stokes shift. It is due to the loss of energy between the time a photon is absorbed and when it is emitted. Many living organisms in nature display fluorescent pigments. More
Physics Ripple Tank If someone were to spend time near an ocean in the southern United States, they would probably notice one thing. They would notice that it was so hot, that they would need to cool off all day long. And the best way to do this would be to go to the nearest beach, and cool off in the refreshing waters. At the beach, they would hear the seagulls cawing, feel the hot sun shining down onto them, and they would notice all of the waves in the ocean. They may notice different wave
background information on the key concepts of light, reflection and refraction will be covered first. Light is defined as electromagnetic radiation of any wavelength. Light is also known as luminous energy or radiant energy. The speed of light is 299 792 458 m/s and is always constant. Electromagnetic radiation involves electromagnetic waves, radio waves, infrared, visible light, ultraviolet, x-ray and gamma
SCATTERING Scattering takes place when obstacle dimension is smaller than wavelength of signal.Light scattering is a form of scattering in which light is the form of propagating energy which is scattered. Light scattering is deflection of a ray from a straight path i.e. Irregularities in the propagation medium, particles, or in the interface between two media. Deviations from the law of reflection due to irregularities on a surface are also usually considered to be a form of scattering. Scattering
producing light of any selected color (wavelength) and second is a Photometer used for measuring the intensity of light. 1. Spectrometer; It produces a desired range of wavelength of light. First collimator (lens) transmits a straight beam of light (photons) that passes through a monochromator (prism) to split it into several components wavelength. Then a wavelength selector (slit) transmits only the desired wavelength. 2. Photometer; after the chosen range of wavelength of light passes through the solution
While reading the book Stiff: The Curious Lives of Human Cadavers, by Mary Roach it opened my eyes and showed me that human cadavers are used for so many things in this world. By me reading this book it enlightened me on the many different ways cadavers can be used. In Each chapter I learned something new that I did not know before hand or expect. Do you ever wonder how surgeons can decapitate heads and just be on their marry way? That was a huge question I had and in chapter one Roach gets right