Page 11 - Science E-Book Prep.3 2024-2025 1st term_Neat unit 3,4

Science Department
Prep.3

*Technological applications:

1. The solar telescope:

- It’s an equipment that centered on the Earth or carried into the
space in order to study the sun.
- The sun light is gathered then separated by spectrometer into a
solar spectrum.
- This telescope works on reflecting the sun rays downwards to a
mirror in a tunnel under the Earth’s surface.

Spectrometer: The sunlight separated into it to shows the different
light wavelengths emitted by the sun.

The Hubble telescope:
- It was launched in April 1990, and rotate around the Earth with a
height 500 km.
- It collects picture representing the evolution of the universe after
the Big Bang.

Importance:
- It collects photos for the universe that give us details about its
state since millions of years to study the evolution of the
universe after the Big Bang.

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First Term