Física do Universo

Rogério Rosenfeld

Instituto de Física Teórica-UNESP

ICTP-SAIFR

LIneA

Ensino Médio – 2018

3a aula – 14/04

Luz passando por um prisma é decomposta em

diferentes comprimentos de onda: espectro

Cada elemento químico tem um espectro

característico – uma “impressão digital”.

O Efeito Doppler

O Efeito Doppler

Expansion of the universe

Universe has a history!

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Expansion of the universe

Universe has a history! 11

http://hubblesite.org/image/4120/news_release/2018-12

The latest Hubble result is based on measurements of the parallax of eight newly analyzed Cepheids in our Milky Way galaxy. These stars are about 10 times farther away than any studied previously, residing between 6,000 light-years and 12,000 light-years from Earth

H0 = 73.45 ± 1.66 km/s Mpc−1

https://arxiv.org/abs/1801.01120

Space itself expands and galaxies get a free “ride”.

Analogy of the expansion of the universe with a balloon:

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