Abstract: We have implemented a light-detection and ranging (LiDAR) system using a single-chip solid-state beam scanner and demonstrated 20-m ranging and imaging operation. The beam scanner is ...

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The peasants were angry about a range of issues, such as low pay and the introduction of a poll tax. They demanded changes were made. The revolt did not achieve all of the peasants’ aims and the ...

When William conquered England, he had a limited knowledge of people’s wealth and property in the country. He was concerned about potential invasions and attacks from enemies, and needed to raise ...