Lecture
In the event of a possible explosion, there are several factors to consider when deciding whether windows should be open or closed. However, it is important to understand that safety in such a situation depends on many factors, such as location, the type of explosion, the structural strength of the building, and many others.
In addition to glass fragments, one should adhere to the two-wall rule if it is not possible to go down to the basement, but the most correct decision is evacuation for the duration of hostilities.
Always follow the recommendations of experts and alerts in your region in the event of emergency or military situations. Below are some general considerations:
Proximity to the epicenter: If you are very close to the site of the explosion, closing windows and doors can be an important step to prevent contaminating factors (biological, chemical, radioactive, or fine particulate dust) and fragments from entering the room and reaching people. These glass substances can be dangerous and cause harm to health. In this case, it is recommended to reinforce windows with tape, covering as much of the glass surface as possible with it. If you are at the epicenter of the explosion, nothing will help you except being underground or evacuating in advance; it is also advisable to board up the window from the outside with plywood, or block it with books or sandbags.
Distance: If you are at a considerable distance from the epicenter and the building you are in appears stable, closing or opening windows may be less significant. It is important to follow instructions and advice regarding your specific location.
Dust and smoke: In the event of an explosion, dust and smoke may occur. Closing windows and doors can help prevent contaminated air and particles from entering the room. If the explosion is accompanied by fires, avoid breathing smoke and use a wet towel or other means to filter the air.
Weakening the shock wave: When an explosion is likely, windows and doors should be closed to reduce the possible likelihood of a sharp change in pressure inside the building, thereby reducing the likelihood of destruction of fragile items in the room (dishes, glass shelves, TV and monitor screens) under the effect of the shock wave. However, in this case the closed windows themselves are likely to be destroyed. If the window is open, the opposite will likely occur: the window will probably remain intact, but everything fragile in the room will be destroyed, including your eardrums. Thus, it is up to you to decide what is more important, your health or your windows. However, all of this may depend on the specific circumstances.
Rescue operations: In the event of a possible explosion, if it is necessary to call rescuers, it is important that your location be identifiable. Open windows or beacons can help rescuers determine that there are living people in your premises.
So, the answer to your question depends on many factors, and it is important to be guided by the specific situation and the recommendations of local authorities or safety experts. In emergency situations, compliance with instructions and safety measures can save lives and health.
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