1. In engineering and physics:
* External characteristics of a machine or device: This refers to the relationship between the input and output variables of a system, observed from the outside. For example:
* Motor's external characteristic: The relationship between the motor's speed and the load torque it can handle.
* Generator's external characteristic: The relationship between the generated voltage and the load current.
* Transformer's external characteristic: The relationship between the input voltage and the output voltage, under varying load conditions.
2. In marketing and business:
* External characteristics of a product or service: This refers to the tangible features and aspects that are directly observable and measurable by customers. These can include:
* Physical attributes: Size, shape, color, weight, material, packaging, etc.
* Functional features: How it works, its capabilities, its performance, its efficiency, etc.
* Aesthetic features: Design, style, visual appeal, etc.
* Brand identity: Logo, name, colors, messaging, etc.
3. In psychology and sociology:
* External characteristics of a person or group: This refers to the observable aspects of someone's appearance, behavior, or social environment that can influence how they are perceived by others. These can include:
* Physical appearance: Age, gender, race, body language, clothing, etc.
* Social status: Occupation, education, income, social connections, etc.
* Behavioral patterns: Speech, manners, interaction style, etc.
4. In computer science:
* External characteristics of a file or data structure: This refers to the metadata associated with a file or data structure, such as its name, size, date modified, access permissions, etc. This information is separate from the actual content of the file or structure.
To understand the meaning of "external characteristic" in a specific context, you need to consider the subject and the broader discussion it's part of. If you provide more context, I can give you a more precise answer.