Telescopes.

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Presentation transcript:

Telescopes

1608 – Earliest Patent for Telescope Hans Lippershey of Middelburg, in the Netherlands, applied for a patent

Earlier Telescope Users Leanord & Thomas Diggs 1570s 1571 Son publishes book “…by proportionall glasses duely situate in convenient angles, not onely discovered things farre off …”

Earlier Telescope Users Thomas Harriot Earliest drawing of moon – August 1609 1609-1613 Unpublished papers

Galileo October / November 1609 observes moon & Jupiter’s moons Venus & Sunspots

Isaac Newton

Let's Explore! Convex Or Converging Concave Or Diverging

??? Why does a Concave or Diverging Lens Shrink Images? Why does a Convex or Converging Lens magnify images? Why are objects upside down in a telescope?

Why does a Concave or Diverging Lens Shrink Images?

Why does a Convex or Converging Lens magnify images?

Why are objects upside down in a telescope?

How do lenses & mirrors work in a telescope?

Refracting Telescopes

Reflecting Telescope

??? Why does a Concave or Diverging Lens Shrink Images? Why does a Convex or Converging Lens magnify images? Why are objects upside down in a telescope?