Severity: Warning
Message: mkdir(): Permission denied
Filename: drivers/Session_files_driver.php
Line Number: 137
Backtrace:
File: /home/estarbk/public_html/dev.estar-bk.com/application/controllers/Main.php
Line: 8
Function: __construct
File: /home/estarbk/public_html/dev.estar-bk.com/index.php
Line: 315
Function: require_once
Severity: Warning
Message: session_start(): Failed to initialize storage module: user (path: /var/cpanel/php/sessions/alt-php74)
Filename: Session/Session.php
Line Number: 137
Backtrace:
File: /home/estarbk/public_html/dev.estar-bk.com/application/controllers/Main.php
Line: 8
Function: __construct
File: /home/estarbk/public_html/dev.estar-bk.com/index.php
Line: 315
Function: require_once
A wave that is vibrating in more than one plane is referred to as unpolarized. Polarized waves are waves in which the vibrations occur in a single plane. The process of transforming unpolarized wave into polarized wave is known as polarization. Light waves are often polarized using a polarizing filter. Only transverse waves can be polarized. Longitudinal waves, such as sound, cannot be polarized because they always travel in the same direction of the wave.
Key terms