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ACTIVITY And the beacon of his bike, which has to do with all this? Earlier we said that the dynamo is a small electrical generator, as you read this far, surely now can answer the question posed below: The lamp does not light alone, you realize some transformation of energy in the process? Did you know that the first dynamo was built by Faraday during investigations of electromagnetic induction? Let us understand a little better the work of Faraday ... The Electromagnetic Induction The generator is a device that operates according to the laws of Faraday's electromagnetic induction, discovered by him from the results of experiments conducted in 1831. In 1820, Hans Orsted(1777-1851) published his works that initiated the unification between magnetism and electricity, realizing a compass deflection occurred by the passage of an electric current. That seems to have motivated the studies of Faraday about electromagnetism, which by this time was working in the laboratory of the English chemist Humphry Davy(1778-1829). An experimental activity With some materials easy to find, you can redo the experience Orsted: cell, a compass, a lamp (the kind used in pine Christmas), a switch-off (if not find, improvise with his own lead wire ) and wires for connection. Assemble the circuit according to the diagram alongside. Closing the circuit, the lamp lights up because the passage of an electric current. What happens to the compass needle? And if you reverse the direction of the electric current? What happens to the needle now? Keep the compass needle parallel to the wire. Repeat items 1 and 2. And now, what happened? What can you say about the angle of deflection of the needle? What signaled the deflection of the compass? Discuss the experience with their colleagues. Make a report.
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AKTIVNOST A svjetionik svom biciklu, koji ima veze sa svim tim? Ranije smo rekli da je Dinamo je mali električni generator, kao što ste pročitali do ovdje, sigurno se sada mogu odgovoriti na pitanje postavljeno u nastavku: Lampica ne svijetli sama, shvatit ćete neke transformaciju energije u tom procesu? Jeste li znali da je prvi Dinamo je sagradio Faraday tijekom istrage elektromagnetske indukcije? Neka nas razumjeti malo bolje djelo Faraday ... Elektromagnetska indukcija Generator je uređaj koji djeluje u skladu sa zakonima Faradayeve elektromagnetske indukcije, otkrio mu na temelju rezultata pokusa u 1831. U 1820, Hans Ørsted(1777-1851) objavio je svoje radove koje je iniciralo ujedinjenje između magnetizma i elektriciteta, ostvarivši kompas otklon dogodila prolaskom električne struje. To izgleda kao da su motivirani na studij Faraday o elektromagnetizmu, koji je u to vrijeme radila u laboratoriju na engleskom kemičar Humphry Davy(1778 - 1829). Eksperimentalna djelatnost S nekim materijalima lako naći, možete ponoviti iskustvo Ørsted: ćeliju, kompas, a svjetiljka (rabi se u borovoj Božić) napajanje(ako ne i pronašli, improvizirati s vlastitom olova žice ) i žice za povezivanje. Sastavite sklop prema shemi zajedno. Zatvaranje krug, žaruljica zasvijetli, jer je prolaz električna struja. Što se događa u magnetske igle? A ako ste promijenili smjer električne struje? Što se događa s iglom sada? Držite paralelu kompas na žici iglu. Ponovite točke 1. i 2.. A sada, što se dogodilo? Što možete reći o kutu otklona od igle? Ono što signalizira otklon kompasa? Raspravite iskustva sa svojim kolegama. Napravite izvješće.