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The human eye can see (maximum acuity) the difference between two lines .35mm apart at 1 meter, so maximum human visual acuity can be described as .00035 of the distance.
Really it's a relationship between size and distance, for instance if an object is 10cm^3 (that's 10cm wide x 10cm long x 10cm high) you would be able to distinguish it from the surrounding environment at a maximum distance of about 28571.42 meters away. That's 85714 feet or about 15 miles.
This is, of course extremely relative to the person we are talking about, the example above is someone with extremely good eyesight.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoThe average motion detector light can detect motion from about thirty to forty feet away, however more expensive models can detect motion from as far as seventy feet away. Also, unless you have an infrared model, most of these ranges are greatly reduced at night.
Wiki User
∙ 11y agoRoughly 380 to 750 nanometers.
(A nanometer is a billionth of a meter --- 0.000 000 001 meter.)
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Motion detector security lights won't turn off?
In most motion sensor switches you will have three wires. A black, white and red wire. The black and white (neutral) are used for the electronics in the sensor. These connect to the incoming black and white power. Connect the lamp across the red and the white (neutral). When the sensor detects motion the red wire becomes "hot" and the light will go on.
What is the minimum amount of equipment needed for a home security monitor?
The minimum requirements one needs for a home security system are: at least one entry detector, a simple motion detector and a control panel (computer).
Can you fool a motion detector?
yes you can disable it by covering the motion detector. remember the detector works with heat and if is cover no signal will be register only a ligth switch will over rite the sensor if you turn the ligth on is going to stay on all ways is not turning of that's y you can disable it
What brand of motion detectors have the the greatest range?
There are many levels of long range motion detectors, personal use and commercial use. Some motion detectors can detect movement up to 8-10 miles away. Some good brands for long range motion detectors are Honeywell and KNX.
What is a commonly used alarm device for monitoring motion indoors?
A motion detector is an alarm peripheral that requires an alarm control panel to receive signals, which can trigger a siren and begin communicating with the central station.
Motion Detector Lights?
form_title= Motion Detector Lights form_header= Feel safe with motion detector lights in your home! How many lights do you need installed?*= {1, 2, 3, 4, 5, 6, More than 6} What size lights do you want installed?*= _ [50] Where will you put the lights?*= _ [50]
Should you leave your outside lights on at night?
Get your outside lights hooked up to a motion detector. The lights will come on only if it detects motion very close to your home. It is not very expensive to do.
When was a motion detector invented?
In 1209 the first motion detector was intended by Ben Ray Alexander wheat
What device do you use to detect motion?
motion detector
Can a kid make a trap with only string a motion detector and a Nerf gun?
Yes, and you wouldn't need the motion detector.
What is an ultrasonic motion sensor?
It is a motion detector that detects motion using sound waves
Why do they say to only use incandescent lights in security lights with motion sensors?
Incandescent light are the only type of light that has a filament. The filament is the the little piece of wire that glows where the electricity passes through it. All other lights are gas filled. Most motion detectors need to pass a small amount of electricity through the filament to work. The motion detector uses the filament as a neutral wire. The time lag to get a florescent bulb to light up would create too much delay and negate the use of the motion detector. The filament will light up very quickly.
Who made the motion detection device?
joney willyems made the motion detector
What is an ultrasonic sensor?
It is a motion detector that detects motion using sound waves
What does a motion detector need to do to set off an alarm?
That's easy. Motion
Can anything other than a human or large animal trigger an infrared motion detector?
Yes, wind or pockets of air with a different temperature than surroundings can trigger a motion detector. Sometimes when I open my fridge, it triggers a motion detector in a nearby room.
How to trip a motion detector?
A: There are photo detector that sense changes in light as movement and there are frequency detectors that sense frequency shift as a person disturb the signal. Both are effective withing a certain range depending on environment and sensitivity. HOW TO TRIP IT IS UP TO YOU.
