Definition
The region of electrical influence surrounding a stationary electrically charged object, in which other charged objects experience a force of attraction or repulsion. Like charges repel and unlike charges attract within this field.
Plain English
The invisible zone around a charged object where its electrical pull or push can be felt by other charged objects nearby.
Context Anchor
Seen in aircraft electrical theory, static discharge discussions, fueling and bonding procedures, and handling of sensitive electronic parts.
Derivation
From Greek 'elektron' meaning amber (rubbed amber was the first known source of static electricity) and Latin 'staticus' meaning standing or at rest. So 'electrostatic' literally means 'electricity at rest' — charges that are sitting still rather than flowing as current. The field is the area of influence those resting charges create.
Why Pilots Care
Uncontrolled electrostatic fields can produce sparks capable of igniting fuel vapors during refueling or maintenance, making proper grounding essential for safety.
Analogy
A rubbed balloon can pull small bits of paper toward it without touching them. The space where that pull can happen is like a simple electrostatic field.
Grounding Statement
Think of rubbing a balloon on your hair and holding it near small pieces of paper — the paper jumps to the balloon. The space around the balloon where that pull works is the electrostatic field.
Intuition Check
Do not think of a “field” here as a marked-off area on the ground. In this term, a field means the space around a charge where an electric force can be felt.
Example Sentence 1
Before fueling the aircraft, the technician attached a bonding wire to equalize any electrostatic field between the fuel truck and the airframe.
Example Sentence 2
Composite surfaces on the fuselage can hold an electrostatic field after flight through dry air, requiring discharge before inspection work begins.