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6 Radiation is used in many different ways - Edexcel - GCSE Physics - Question 6 - 2018 - Paper 1
Question 6
6 Radiation is used in many different ways. (a) Which of these can be used both for communication and for cooking? Put a cross in the box (X) next to your answer. ... show full transcript
Worked Solution & Example Answer:6 Radiation is used in many different ways - Edexcel - GCSE Physics - Question 6 - 2018 - Paper 1
Step 1
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Step 3
Explain the limitations of ground-based telescopes in observing stars.
Answer
Ground-based telescopes face several limitations due to atmospheric interference. The Earth's atmosphere can distort light from stars, which affects clarity and resolution. Additionally, weather conditions such as clouds and humidity can hinder observations. Light pollution from urban areas further complicates the ability to observe faint celestial objects.
Step 4
Explain how their two experiments led to these discoveries.
Answer
Herschel conducted his experiment using a prism to break light into its component colors, measuring temperature to discover infrared radiation just beyond the red end of the spectrum. He noted that the temperature increased towards the red. Meanwhile, Ritter used sensitive paper to detect ultraviolet radiation, finding it beyond the violet end, where the paper blackened quickest. Both experiments revealed the existence of radiation beyond visible light, which was previously unknown.