Präsentation zum Thema: "Die Etymologie Spektrum specere = aussehen Sir Isaac Newton"— Präsentation transkript:
1Die Etymologie Spektrum specere = aussehen Sir Isaac Newton “The new theory AboutLight and Colour (1672)“
2Sir Isaac NewtonBorn:1642Died:1727 (age 85)Education:Physicist, MathematicianFirst big contribution:1665 (age 23)Biggest contribution:1966 (age 24)His claim to fame is Newton’s three laws of motion, discovering the spectrum of light, inventing calculus, and discovering the universal law of gravitation. Due to his work in classical mechanics, the subject is often called Newtonian mechanics.As a child, Isaac was not viewed as a bright student by his teachers, who described him as “idle” and “inattentive”.Newton obtain a law degree from his uncle's old College.In the summer of 1665 and he was forced to return to Lincolnshire because the University closed due to the plague. It was at this time that Newton’s true scientific genius would emerge. During his two year stay at home he would make revolutionary advances in mathematics, optics, physics, and astronomy. Newton invented the reflecting telescope.Newton’s greatest achievements were his work in motion and celestial mechanics, which ultimately led to theory of universal gravitation.In 1705, he was the first scientist ever knighted in honor of his discoveries.
3Goethe "Das Auge hat sein Dasein dem Licht zu danken. Aus gleichgültigen tierischenHülfsorganen ruft sichdas Licht ein Organ hervor, das seines gleichen werde;und so bildet sich das Auge am Lichte fürs Licht,damit das innere Licht dem äußeren entgegentrete."
4Der Sinus T= 40ms T: Periode F: Frequenz F=1/T=25 Hz General properties of the sinusoide...The amplitude can be anythingExplain that a perfect sinusoid is from –inf to +inf
5Die Schallwellen E=165 Hz A=220 Hz B C D E F G A B C D E F G A B C D E What happens when you change the period? Why the first sounds terrible? In nature no sound is pure.A=220 HzBCDEFGABCDEFGABCDE
12Die geöffnete Cochlea Quelle: http://www.bartleby.com/107/ Die PaukentreppeDie VorhoftreppeQuelle:
13Die Cochlea aufgerollt TreppenBei hohen Tönen wird nur der dem Mittelohr nahe Teil angeregt, bei niedrigen Tönen laufen die Wellen bis in die Spitze. Es kommt zur räumlichen Auftrennung der TonhöhenHochfrequenzenNiederfrequenzenE qui si spiega come funziona la ricezione parallela di diverse frequenze.Länge: 3 cmSinneszellen
15Warum ist der Frequenzbereich so wichtig? 1. Charakterisierung der SignaleSpracheShallwellenMusikElektromagnetischeWellenSulla lavagna spiego come funziona il filtraggio in frequenza.
16Warum ist der Frequenzbereich so wichtig? 2. LTI Systeme?LTIzeitzeitSulla lavagna spiego le autofunzioni!!!LTIzeitzeit
17France Baron Jean Baptiste Joseph Fourier Born:1768Died:1830 (age 62)Education:MathematicianFirst big contribution:1820 (age 52)Biggest contribution:1822 (age 54)Born into a prominent family, he was trained for priesthood however, Fourier turned to the life of mathematics and the military. At only sixteen years of age, Joseph became a mathematics teacher at the military school in Auxerre. When he was 27, he began working at the Ecole Normale in Paris. Three years later, in 1798, he followed Napoleon on his Eastern expedition and was given the postion of governor of Lower Egypt. In 1801, Fourier returned to France and was named prefect of Grenoble. All the knowledge in the world however, could not save him from the inevitable. Fourier died in Paris on May 16, 1830.
18Fourier ReiheWhat happens when you change the period? Why the first sounds terrible? In nature no sound is pure....
19Signal Reconstruction I 1 Komponente6 KomponentenWhat happens when you change the period? Why the first sounds terrible? In nature no sound is pure.
20Signal Reconstruction II 100 KomponenteWhat happens when you change the period? Why the first sounds terrible? In nature no sound is pure.Welche Bandbreite brauchen wir?
21Reihe IntegralSulla lavagna spiego le autofunzioni
22Filtrieren Synthetischer Generator Gitarre Filter Sulla lavagna spiego come funziona il filtraggio in frequenza.
23Sulla lavagna spiego le autofunzioni Rembrandt, ANATOMY LESSON OF PROFESSOR NICOLAES TULP (1632).
24Das LichtWhat happens when you change the period? Why the first sounds terrible? In nature no sound is pure.
25Das AugeWhat happens when you change the period? Why the first sounds terrible? In nature no sound is pure.
26Cones and RodsBy population, about 64% of the cones are red-sensitive,about 32% green sensitive, and about 2% are blue sensitive.What happens when you change the period? Why the first sounds terrible? In nature no sound is pure.