The easiest way is to use a Passive Infra-Red (PIR) sensor, like they use on "movment-sensitive" alarms and outdoor lights.
Check your local electrical supply store - they've been available here in Australia for some years.
static electricity Static Electricity
Because it is not a good condutor of electricity
We smell because of particles in the air. Air currents , due to people moving about or fans in the room. carry the particles across the room and the nerves in your nose detect them.
It depends on the efficiency of the heater or cooler.
It isn't clear what experiment you are talking about, but pressumably the idea was to detect whether the temperature changed.
If you mean the maximum occupancy of a room, then several things are considered. The square footage of the room, the room's purpose, and the number of emergency exits that exist are factored in.
if we will sleep we will not knowing that there is electricity or not
Marvin out of JLS does not run away when theirs electricity in the room he is not a divy
Geraldine had the good sense to detect the unusual scents that came from the room.
Quite wrong! Just walk down a hotel corridor and touch the handle of your room door...there will be a distinct crack and you will detect the static electric charge you have accumulated. It hurts.
yeah they clean out the room but the cant clean the air
The cheapest price one can rent a room at Hilton Garden Inn Hotels depends on location, day of the week and the type of room. For a middle of the week, single occupant room you can pay about $85 a night.
When the air is dry, static electricity is enhanced and more noticeable because of the easiness in transfer of electrons.
No, if you are not in the room you are just wasting electricity.
Ionic compounds will not conduct electricity as solids, which is what they are at room temperature. However, they will conduct electricity if molten or dissolved in water.
Water
yes that's why we can tell when som1 is in the room