ASTR 1345 1st Edition Lecture 14 Outline of Last Lecture I. Telescope PartsA. Focal PointB. Focal LengthC. Focal PlaneD. Eyepiece LensE. MagnificationII. LensesA. Convex LensesB. Concave LensesC. Objective LensesIII. Refracting TelescopeA. Spherical Aberration (Problem and Solution)B. Chromatic Aberration (Problem and Solution)IV. Reflecting TelescopeA. Problem and SolutionV. TwinklingOutline of Current Lecture I. Brightest ColorsII. BlackbodiesA. Blackbody CurveIII. Fahrenheit, Celsius, and KelvinCurrent Lecturel.As an object heats up it gets brighter, emitting more electromagnetic radiation at all wavelengths. The brightest color (most intense wavelength) of emitted radiation changes with temperature.ll.Blackbodies are a hypothetical perfect radiator that absorbs and reemits all radiation falling upon it.These notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.A. The blackbody curve is the curve obtained when the intensity of radiation from a blackbody at a particular temperature is plotted against wavelength.lll.273 degrees Celsius is the absolute zero in Kelvin. Fahrenheit to Celsius is Tc=(5/9)(Tf-32). Celsius to Fahrenheit is Tf=(9/5)Tc+32. Celsius to Kelvin is Tk=Tc+273.15. Sunlight’s thermal radiation is at 5700K. The number of protons make elements
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