Absorption spectrum of the Spinach Chloroplast By a Different Wavelength and Photosynthesizes Activity in different light filters Instructor: Dr‚ David Danseraveu Student: Hassan Sedaghat‚ A00345910 Due date: 11/13/2012 Material and Method: In the photosynthesis system‚ plants and other photosynthesizing creatures they use light of the sun as energy by absorbing some specific wavelength. A prepared sample of the chloroplast from spinach was used during this experiment
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Speed of Sound Lab Report Jamie Cook PHYS 1114: College Physics I Oklahoma City Community College December 10‚ 2013 Purpose: The purpose of this experiment is to measure the speed of sound in air and to determine the effects of frequency on the speed of sound. Apparatus (equipment used): Signal generator: manufacturer- EMCO‚ model number- SS-1‚ range- 20Hz-2MHz‚ least count- 1Hz Frequency meter: manufacturer- DEADALON CORPORATION‚ model number- N/A‚ range-
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EXPERIMENT: 1 Object: To find the wavelength of Sodium light by Newton’s ring. Apparatus required: A Plano convex lens of large radius of curvature‚ optical arrangement for Newton’s rings‚ plane glass plate; sodium lamp and traveling microscope. Formula used: The wavelength of light is given by the formula λ =D n2+p –Dn2 / 4pR Where D n+p = diameter of (n+p)th ring Dn = diameter of n th ring‚ P = an integer number‚ R = radius of curvature of the curved face of the Plano- convex lens.
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second) -> longer delay between S and P waves‚ means greater distance from the epicenter A) B) C) D) Crest Trough Amplitude Wavelenght Cycle -> one complete wavelength Amplitude -> half the distance from crest and trough Wavelength -> distance of one complete cycle (SI units = meters) Period (T) -> time for one wavelength to pass (SI Units = seconds) Frequency (f) -> number of cycles that pass by per time interval = Cycles per second = 1 Hertz (Hz) T=(1/f) and f=(1/T) Ex. f=2 Hz =
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central chlorophyll molecule to do photosynthesis. Light contains all the colours of the visible light spectrum‚ from red to violet. Each colour has a different wavelength. The highest energy light is at the purple or violet end of the scale. It has short wavelengths. The red end is lower energy‚ it has long wavelengths. The shorter the wavelength the more energy a colour has. The colour you see when you look at an object is the colour that light is reflecting back at your eye. Plant leaves usually look
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of light‚ travels in wavelengths and is measured in nanometres (nm). Pigments within matter‚ such as plants‚ absorb varying wavelengths of light. The absorption spectrum can be defined as a graphical representation of a pigment’s ability to absorb light against varying wavelengths (nm). The pigments light absorbing ability is measured using a spectrophotometer. An action spectrum can be defined as the graphical representation of the rate of photosynthesis against wavelengths of light. The graph shows
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SCHOOL OF PHYSICS Physics 1001: Laboratory 3. Standing Waves. Your name/student number:_________________________________ Date:_________ Marker’s signature:______________ Mark:______ Pre-lab Question 1: What is the wavelength of a sound wave of frequency 500 Hz in air (you will need to look up the speed of sound in air)? ________ m. Pre-lab Question 2: If a person inhales helium gas the sound of their voice changes quite dramatically. Why? Pre-lab Question 3: A shower cubicle
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both of these purposes. Another type of wave‚ though not on the spectrum because it is not light‚ are sound waves. Weather the wave is a sound wave or a light wave it consists of the basic similar parts. These waves all contain wavelength and frequency. A longer wavelength will mean a smaller energy level‚ as to where a shorter wave length makes the wave more compact and it will have a higher energy level. Some of the energy levels can become so high that they may become harmful. Other waves may have
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What is Remote Sensing? Remote sensing‚ in simplest words‚ means acquiring information about an object without touching the object itself. Conventionally‚ however remote sensing has come to imply that the sensor and the target are located remotely apart and the electromagnetic radiation serves as a link between the sensor and the object‚ the sun being the major source of energy illuminating the earth. The part of this energy is reflected‚ absorbed and transmitted by the surface. A sensor records
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refracted: wavelength‚ frequency and velocity? (1) www.topperlearning.com 1 CBSE XII | PHYSICS Sample Paper - 1 Q6. Does the frequency of incident radiation affect the stopping potential or saturation current or both? (1) Q7. In an unbiased p-n junction why do holes diffuse from the p region to the n region? (1) Q8. What is noise in a communication system? (1) Q9. An electron‚ alpha particle and proton have the same kinetic energy. Which of these particles has the shortest de Broglie wavelength? (2)
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