ASTR 1101 Chapter Notes - Chapter 5: Continuous Spectrum, Radiography, Electromagnetic Spectrum
Document Summary
Wave- a mechanism that allows energy to be transferred one place to another. Lowercase lambda = wavelength: trough vs crest. 3 properties of waves: can interfere with one another. Can make them add or subtract: reflection- when the wave half bends (literally bounce, refraction: angle is less than the incident (the continuation of that bounce) Types of waves: mechanical waves, sound waves, water waves, seismic waves, electromagnetic radiation, radio, microwave, optical light, x-rays. A,b,c,d, (red, blue, green, yellow) (d has the longest peak wavelengthso it is the coldest) d"s peak is further right. A,b,c,d? (a= b/c it has the most intensity at a wavelength) (will tell us where each light it on) ( Which star is the bluest? (bluer means hotter, redder means colder) (bluest- shortest wavelength) Which star is bigger? (in radius) b: (longer wavelength=colder) In order for something cooler to be brighter than a hotter object, then the cooler one must be a lot bigger.
