density

Letters written and data recorded from the HMS Challenger

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Station recordings from HMS Challenger Here we are again! I told you all last time I would let you see some of the original data from the reports from the HMS Challenger. Let’s look at some recordings from station 256. This was on the journey from Yokohama to the Sandwich Islands on July 21st 1875. … Read more

Measurements and equipment on HMS Challenger

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As I explained in our first post, the HMS Challenger expedition aimed to find out the chemistry and physics of the deep-sea. However, what and how did they measure? Measurements and equipment used on HMS Challenger              To measure temperature: Miller-Cassela thermometers One of the main components they wanted to measure was … Read more