Why does one feel difficult to breathe in a deep well while cleaning it?

see the physics question 3 above yours

Feeling difficulty in breathing while cleaning a deep well can be attributed to two main factors: low oxygen levels and the presence of toxic gases.

1. Low oxygen levels: Deep wells are usually enclosed spaces with limited air circulation. As you enter the well, you consume some of the available oxygen and replace it with carbon dioxide when you exhale. In an enclosed space, such as a deep well, the concentration of oxygen can decrease rapidly, leading to decreased oxygen levels. When the oxygen levels dip below a certain threshold (around 19.5% concentration in air), it can cause difficulty in breathing, shortness of breath, and even loss of consciousness.

2. Presence of toxic gases: Deep wells can accumulate a variety of toxic gases, such as methane, hydrogen sulfide, or carbon monoxide. These gases are usually formed from decomposing organic matter or chemical reactions within the well. Inhaling or coming into contact with these gases can lead to serious health issues, including respiratory problems, dizziness, nausea, and even death.

To ensure your safety while cleaning a deep well, it is crucial to take the following precautions:

1. Proper ventilation: Before entering the well, ensure there is adequate ventilation to maintain a sufficient oxygen supply. This can be achieved by using fans or blowers to circulate fresh air or by using proper respiratory equipment.

2. Testing for toxic gases: Use gas detectors or monitoring devices to measure the concentration of toxic gases present in the well. If high levels of toxic gases are detected, it is essential to evacuate the area and seek expert assistance.

3. Personal protective equipment (PPE): Wear appropriate PPE, including a respirator with the correct filters, to protect against inhaling toxic gases or low oxygen levels. Additionally, wear gloves, goggles, and other safety gear to prevent any skin or eye contact with harmful substances.

4. Training and assistance: Ensure that you have received proper training on working in confined spaces and handling hazardous substances. It is advisable to have a standby person outside the well who can monitor your safety and provide assistance if needed.

Always prioritize safety and follow recommended guidelines when cleaning deep wells or any other enclosed spaces to minimize the risk of breathing difficulties and other potential hazards.