2013
DOI: 10.1590/s1678-31662013000400008
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Óptica

Abstract: Pois seja traçada a perpendicular BR a partir do ponto B até LX, seja BR prolongada até O, incidam os raios AL, AK, AT, AX, AN e AM e sejam unidas AR, AP e AO. Ora, uma vez que a linha reta AR foi unida a partir do ponto elevado A até RX, então AR é perpendicular a RX e AO à OM e AP à PN. Portanto, os triângulos ARX, APN e AOM são retangulares. Ora, uma vez que são retangulares e que PN é igual a RX e PA é maior do que AR, então o ângulo sob XAR é maior do que o ângu… Show more

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“…The experiment is depicted in Euclid's Optics (proposition XIX) and presupposes the knowledge of reflection law [5]. In fact, as perhaps reflection law was known by the Platonic school and some has pointed to Philip of Opus as his discoverer, the first evidence of that knowledge comes from that work of Euclid, which has been transmitted in a somewhat complicated, but essentially literal way.…”
Section: Reflection Lawmentioning
confidence: 99%
“…The experiment is depicted in Euclid's Optics (proposition XIX) and presupposes the knowledge of reflection law [5]. In fact, as perhaps reflection law was known by the Platonic school and some has pointed to Philip of Opus as his discoverer, the first evidence of that knowledge comes from that work of Euclid, which has been transmitted in a somewhat complicated, but essentially literal way.…”
Section: Reflection Lawmentioning
confidence: 99%