The discussion revolves around the challenges of surviving in a submarine at great depths in the ocean. The ocean's pressure and temperature significantly increase as you descend, making it difficult for humans to survive. The pressure at thousands of meters is much higher than what the human body can withstand. Additionally, the water at these depths is very cold, close to zero degrees.
A submarine, being a rigid metal box, protects people from these harsh conditions. However, the life-saving equipment inside the submarine has less than 24 hours left, and the oxygen available inside the submarine is almost depleted.
The professor explains that if a submarine is weakened and pressure is released from the inside, it could crush instead of explode. The water pressure from the outside would then try to infiltrate the submarine, potentially causing it to break apart.
The submarine's communication system relied on sound waves, which are one of the few ways to communicate over a great distance in the ocean. However, there has been no communication from the submarine since it disappeared last Sunday, sparking fears for the crew's safety.
Despite the expense and difficulty, the professor hopes that the crew will be found and that the questions surrounding the submarine's disappearance will be answered.
1. The text discusses the extreme conditions at depths of thousands of meters underwater, where pressure is much higher than what the human body can resist, and the water temperature is close to zero degrees. [Source: Document 1]
2. The submarine, designed to withstand these conditions, is a rigid metal box that protects people from the harsh external conditions. [Source: Document 1]
3. The submarine has less than 24 hours of life-saving equipment and oxygen available inside, according to the company's information. [Source: Document 1]
4. The text explores the concept of a submarine implosion process, explaining that if the pressure inside an object increases, it can break and expand from the inside out. [Source: Document 1]
5. The text mentions a professor and coordinator of the oceanography course at the Federal University of Espírito Santo, Agnaldo Martins, who is providing expert information on the topic. [Source: Document 1]
6. The text discusses the depth of a submarine, mentioning that it could reach a maximum depth of 3800 meters, similar to the location of the Titanic. [Source: Document 2]
7. The text explains that the pressure at the bottom of the sea is so strong because water is much denser than air. As you descend, the pressure increases significantly. [Source: Document 2]
8. The text discusses the temperature of the deep sea, stating that deep waters are cold because they don't receive heat from the sun. [Source: Document 2]
9. The text mentions that sound waves are the only way to communicate over a greater distance in the ocean. [Source: Document 3]
10. The text discusses the potential for a submarine to have an electronic failure, which would prevent communication and could indicate a more serious problem. [Source: Document 3]
11. The text highlights the difficulty and expense of exploring the deep ocean due to the high pressure and the need for heavy, expensive equipment. [Source: Document 3]