The mercury barometer was invented by:

Options

A. Archimedes
B. Toricelli
C. Fahrenheit
D. Celcius

Explanation

To solve the question "The mercury barometer was invented by:", we can follow these steps:

### Step 1: Understand the Question
The question is asking for the inventor of the mercury barometer. A barometer is an instrument used to measure atmospheric pressure.

**Hint:** Identify what a barometer is and its purpose.

### Step 2: Analyze the Options
The options provided are Archimedes, Trusley, Pharaonite, and Celcius. We need to determine which of these individuals is associated with the invention of the mercury barometer.

**Hint:** Consider the historical context of each name and their contributions to science.

### Step 3: Recall Historical Facts
From the video transcript, it is mentioned that the mercury barometer was invented by Thorsley. This indicates that Thorsley is the correct answer.

**Hint:** Look for any additional information about Thorsley and his contributions to the field of pressure measurement.

### Step 4: Confirm the Properties of Mercury
The transcript also discusses the properties of mercury, noting that it is a metal that remains liquid at room temperature and has a high density compared to other liquids. This property makes it suitable for use in barometers.

**Hint:** Think about why the properties of mercury are important for its use in a barometer.

### Step 5: Conclude the Answer
Based on the information gathered, the answer to the question is that the mercury barometer was invented by Thorsley.

**Final Answer:** The mercury barometer was invented by Thorsley.

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