Odraz vlnění na pevném a volném konci prostředí fixed vs free reflections/boundary conditions http://www.acs.psu.edu/drussell/Demos/reflect/reflect.html http://www.acs.psu.edu/drussell/Demos/reflect/reflect.html Kettering EDU: Reflection Questions 22-33 Penn State College of Engineering http://www.acs.psu.edu/drussell/Demos/reflect/reflect.html Penn State College of Engineering http://www.acs.psu.edu/drussell/Demos/reflect/reflect.html had his tonsils removed http://www.acs.psu.edu/drussell/Demos/reflect/reflect.html tutorial on how waves reflect, when they hit a boundary. Penn State College of Engineering tutorial on how waves reflect, when they hit a boundary. this page Penn State College of Engineering ReflectionAnimation http://www.acs.psu.edu/drussell/Demos/reflect/reflect.html acs.psu.edu/drussell/Demos/reflect/reflect.html