In vacuum, there is no such mass or material object. So it should have permittivity approaching 0(and in fact 0 itself). But permittivity of free space (free ... ... <看更多>
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Severity: Notice
Message: Trying to access array offset on value of type null
Filename: controllers/Pages.php
Line Number: 521
Backtrace:
File: /var/www/html/KOL/voice/application/controllers/Pages.php
Line: 521
Function: _error_handler
File: /var/www/html/KOL/voice/public/index.php
Line: 319
Function: require_once
Severity: Notice
Message: Trying to access array offset on value of type null
Filename: controllers/Pages.php
Line Number: 521
Backtrace:
File: /var/www/html/KOL/voice/application/controllers/Pages.php
Line: 521
Function: _error_handler
File: /var/www/html/KOL/voice/public/index.php
Line: 319
Function: require_once
Search
In vacuum, there is no such mass or material object. So it should have permittivity approaching 0(and in fact 0 itself). But permittivity of free space (free ... ... <看更多>