Ljud och ljud Lekförhör Flashcards by Melker Norberg

Q

Frekvens

A

Antal svängningar.

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Q

Våglängd

A

avståndet mellan topparna i svängningarna

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Q

Amplitud

A

avståndet mellan toppen och mitten av vågen

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Q

Tonhöjd

A

avståndet mellan toppen till botten av vågen.

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Q

Tonstyrka

A

ljudvolymen

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Q

Decibel

A

enheten för tonstyrkan/ljudvolym

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Q

Infraljud

A

över 20kHz

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Q

ultraljud

A

under 20 Hz

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Q

Infrarött ljus

A

värmestrålning (ej synbart)

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Q

Ultraviolett ljus

A

det som gör dig solbränd (inte synligt)

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Q

Laser

A

ljus som en frekvens, alltså en färg.

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Q

Reflektionslagen

A

ljuset reflekteras med samma vinkel mot spegeln som från spegeln

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Q

Brännpunkt

A

där ljusstrålarna samlas

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Q

Vitt ljus

A

det innehåller alla färger (regnbåge).

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