Question

which is the main defect of sundial​

Answer 1

Answer:

• A sundial doesn't work at night.
• A sundial doesn't work when the sun is hidden - by clouds, buildings, etc.
• A sundial only works at the latitude it is designed for - a sundial built for Ecuador woudl not be accurate in New Zealand.

Explanation:

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Answer 2

These give the time quite accurately but have a draw back, as they cannot give time on a cloudy day.Also time can be measured only at that site, they cannot ne carried to any location. And time cannot be measured at night.

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