I. Purpose: To observe the colors produced when compounds are introduced into a flame and the electrons become excited. To estimate the wavelength of light produced‚ then calculate the frequency and energy of the light II. Safety: Standard safety procedures III. Chemical Inventory: |Chemical Name: |Hazards: | |Lithium Chloride
Premium Light Electromagnetic radiation Wavelength
4715 1.213 59.03 179.95 66.78 0.00033 4 0.84 0.080 0.76 0.8717 57.9 108 47.98 0.00033 5 0.66 0.050 0.49 0.7 58.4 108 38.53 0.00033 Figure 1: A graph of Wavelength‚ λ‚ (m) versus square root of tension‚ T1/2 Sample Calculations:
Premium Wave Fundamental physics concepts Optics
SENSATION AND PERCEPTION APSY 382 Aug 27th‚ 2012 Chapter 1 Psychophysics – how we measure perception (loose definition) Sensation = unidimensional = varies in one way (sounds get louder or softer) Perception = multidimensional = varies in many ways (there are a lot of kinds of books) Perception – knowing the present Memory – knowing the past Thinking – knowing the future Cognition = the influence of perception‚ memory‚ and thinking Aug 29th‚ 2012 Basic principles of perception 1. Stimulation
Premium Perception Light Sense
to a detector. You will control the source speed as well as the frequency of waves emitted by that source. You will observe the wave fronts and measure the frequency at the detector. The Jump Start exercises below will help you review frequency‚ wavelength‚ pitch‚ and the Doppler effect. 3 Jump Start What type of wave is a sound wave? Sound waves are longitudinal waves that are created by a vibrating object and transmitted only through the motion of molecules in a solid‚ gas‚ or liquid. The
Premium Sound Wave Doppler effect
Light Intensity Experiment: For the light intensity experiment‚ our first set of data illustrated strange correlations between the three tubes placed in front of a light source‚ so the data provided in e-campus was used. The tube that was 24 cm away from the light had the greatest decrease in absorbance over the course of 20 minutes‚ followed by the 30 cm and then the 49 cm light apparatus. The tube that was placed in the dark (wrapped in foil) remained a dark blueish-green color whereas the tubes
Premium Light Electromagnetic radiation Quantum mechanics
repeated with the same solution at 40 nm intervals‚ until the wavelength reached 740 nm‚ re-blanking the machine between each test or change in wavelength. All the absorbencies were recorded‚ and the areas with the highest absorbance were retested at 5 nm intervals. The results were then plotted on Excel to show the relationship between certain wavelengths and the absorbance of the
Premium Color Visible spectrum Chlorophyll
3 x 108 ms-1‚ calculate: a. The length of a typical wave train of light in air [0.3m] b. The number of cycles in such a wave train if the wavelength in air is 50nm. [6x10⁶] 3. In a double slit experiment‚ a screen in positioned at a distance of 0.80m from the two slits. Light of wavelength 590nm is directed at the slits normally to give an interference pattern on the screen with five fringes spaced over a distance of 4.8mm. Calculate the slit spacing. [4.92x10ˉ⁴m]
Premium Wavelength Light Quantum mechanics
Antonio 3. A certain light source is emitting radiation with a frequency of 5.55x1015 Hz. a) What is the wavelength of the emitted photons? b) In what part of the electromagnetic spectrum are the emitted photons? 4. Suppose a dark hydrogen line in a star’s spectrum is produced at a wavelength of 6563 A‚ BUT this line has a MEASURED wavelength of 6560 A. (a) Would this star be moving toward us or away? (b) How fast would it be moving along our line
Premium Light Electromagnetic radiation Wavelength
prism with a triangular base and rectangular sides‚ and in colloquial use "prism" usually refers to this type. Some types of optical prism are not in fact in the shape of geometric prisms. Prisms can be made from any material that is transparent to the wavelengths for which they are designed. Typical materials include glass‚ plastic and fluorite. A prism can be used to break light up into its constituent spectral colors (the colors of the rainbow). Prisms can also be used to reflect light‚ or to split light
Free Refraction Light Optics
from them The interferometer is the most accurate device presently known to man‚ and most likely will remain the most accurate measuring device for the next hundred years" Cal Christiansen. The interferometer can measure lengths of one half the wavelength of the light source being used. With a HeNe laser (Helium Neon) this length is 316.4nm‚ about 1/3 of a micron. The interferometer is able to measure very small distances by the interference produced between two lasers beams. With this degree of
Premium Light Wavelength Wave