Warning (2): file_put_contents(/home/pdemos/sales.physicsdemos/logs/debug.log): failed to open stream: Permission denied [CORE/src/Log/Engine/FileLog.php, line 133]
Code Context
        if (!$mask) {
            return file_put_contents($pathname, $output, FILE_APPEND);
        }
$level = 'info'
$message = 'Array
(
    [host] => sales.physicsdemos.com
    [url] => /home
    [type] => guest
    [lang] => en
    [ip] => 216.73.217.5
)
'
$context = [
	'scope' => []
]
$output = '2025-07-08 11:35:33 Info: Array
(
    [host] => sales.physicsdemos.com
    [url] => /home
    [type] => guest
    [lang] => en
    [ip] => 216.73.217.5
)

'
$filename = 'debug.log'
$pathname = '/home/pdemos/sales.physicsdemos/logs/debug.log'
$mask = null
file_put_contents - [internal], line ??
Cake\Log\Engine\FileLog::log() - CORE/src/Log/Engine/FileLog.php, line 133
Cake\Log\Log::write() - CORE/src/Log/Log.php, line 384
Cake\Log\Log::info() - CORE/src/Log/Log.php, line 517
App\Controller\AppController::beforeFilter() - APP/Controller/AppController.php, line 146
App\Controller\PagesController::beforeFilter() - APP/Controller/PagesController.php, line 100
Cake\Event\EventManager::_callListener() - CORE/src/Event/EventManager.php, line 416
Cake\Event\EventManager::dispatch() - CORE/src/Event/EventManager.php, line 393
Cake\Controller\Controller::dispatchEvent() - CORE/src/Event/EventDispatcherTrait.php, line 110
Cake\Controller\Controller::startupProcess() - CORE/src/Controller/Controller.php, line 502
Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 114
Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 93
Cake\Routing\Dispatcher::dispatch() - CORE/src/Routing/Dispatcher.php, line 60
[main] - ROOT/webroot/index.php, line 36

Warning (2): file_put_contents(/home/pdemos/sales.physicsdemos/logs/audit.log) [<a href='https://secure.php.net/function.file-put-contents'>function.file-put-contents</a>]: failed to open stream: Permission denied [CORE/src/Log/Engine/FileLog.php, line 133]
Code Context
        if (!$mask) {
            return file_put_contents($pathname, $output, FILE_APPEND);
        }
$level = 'info'
$message = 'Array
(
    [host] => sales.physicsdemos.com
    [url] => /home
    [type] => guest
    [lang] => en
    [ip] => 216.73.217.5
)
'
$context = [
	'scope' => []
]
$output = '2025-07-08 11:35:33 Info: Array
(
    [host] => sales.physicsdemos.com
    [url] => /home
    [type] => guest
    [lang] => en
    [ip] => 216.73.217.5
)

'
$filename = 'audit.log'
$pathname = '/home/pdemos/sales.physicsdemos/logs/audit.log'
$mask = null
file_put_contents - [internal], line ??
Cake\Log\Engine\FileLog::log() - CORE/src/Log/Engine/FileLog.php, line 133
Cake\Log\Log::write() - CORE/src/Log/Log.php, line 384
Cake\Log\Log::info() - CORE/src/Log/Log.php, line 517
App\Controller\AppController::beforeFilter() - APP/Controller/AppController.php, line 146
App\Controller\PagesController::beforeFilter() - APP/Controller/PagesController.php, line 100
Cake\Event\EventManager::_callListener() - CORE/src/Event/EventManager.php, line 416
Cake\Event\EventManager::dispatch() - CORE/src/Event/EventManager.php, line 393
Cake\Controller\Controller::dispatchEvent() - CORE/src/Event/EventDispatcherTrait.php, line 110
Cake\Controller\Controller::startupProcess() - CORE/src/Controller/Controller.php, line 502
Cake\Http\ActionDispatcher::_invoke() - CORE/src/Http/ActionDispatcher.php, line 114
Cake\Http\ActionDispatcher::dispatch() - CORE/src/Http/ActionDispatcher.php, line 93
Cake\Routing\Dispatcher::dispatch() - CORE/src/Routing/Dispatcher.php, line 60
[main] - ROOT/webroot/index.php, line 36

Warning (2): file_put_contents(/home/pdemos/sales.physicsdemos/logs/error.log) [<a href='https://secure.php.net/function.file-put-contents'>function.file-put-contents</a>]: failed to open stream: Permission denied [CORE/src/Log/Engine/FileLog.php, line 133]
Code Context
        if (!$mask) {
            return file_put_contents($pathname, $output, FILE_APPEND);
        }
$level = 'warning'
$message = 'Headers already sent in /home/pdemos/sales.physicsdemos/vendor/cakephp/cakephp/src/Error/Debugger.php:850'
$context = [
	'scope' => []
]
$output = '2025-07-08 11:35:33 Warning: Headers already sent in /home/pdemos/sales.physicsdemos/vendor/cakephp/cakephp/src/Error/Debugger.php:850
'
$filename = 'error.log'
$pathname = '/home/pdemos/sales.physicsdemos/logs/error.log'
$mask = null
file_put_contents - [internal], line ??
Cake\Log\Engine\FileLog::log() - CORE/src/Log/Engine/FileLog.php, line 133
Cake\Log\Log::write() - CORE/src/Log/Log.php, line 384
Cake\Log\Log::warning() - CORE/src/Log/Log.php, line 469
Cake\Http\Response::sendHeaders() - CORE/src/Http/Response.php, line 517
Cake\Http\Response::send() - CORE/src/Http/Response.php, line 492
Cake\Routing\Dispatcher::dispatch() - CORE/src/Routing/Dispatcher.php, line 65
[main] - ROOT/webroot/index.php, line 36

TEACHING PHYSICS
JUST GOT EASIER

The Video Encyclopedia of Physics Demonstrations is a valuable resource presenting concepts of physics not otherwise easily understood by students. Consisting of 600 carefully curated flawlessly produced high quality physics demonstrations in English, Spanish and Portuguese with optional subtitles and other valuable written material.
Available
Online • On Local Servers • On Flash Drives

Preview videos

INCREASE STUDENT ENGAGEMENT WITH MOODLE

An online platform to enhance student learning

An educational social network designed to help teachers create online classrooms to provide rich interaction and collaboration among teachers and students.

See more

TAKE YOUR STUDENTS OUTSIDE THE FOUR WALLS OF THE CLASSROOM

with the 600 videos of Encyclopedia of Physics Demonstrations in English, Spanish and Portuguese, considered to be the most valuable in teaching physics and physical science to students in universities, secondary schools and also to younger students.

Products

• The Series

  The Video Encyclopedia of Physics Demonstrations is a valuable resource presenting concepts of physics not otherwise easily understood by students. Consisting of 600 carefully curated flawlessly produced high quality physics demonstrations in English, Spanish and Portuguese with optional subtitles and other valuable written material.

• Moodle

  Moodle, the open source course management system used by thousands of educational institutions around the world providing organized e-learning as an integral asset of the series when licensed online or on microprocessors for groups of students

• Products

  FOR STUDENTS · PROFESSORS · CLASSROOMS
  AVAILABLE
  ONLINE · ON MICROPROCESSOR · ON FLASHDRIVE
  WITH SEVERAL PRICE OPTIONS

7000 SCHOOLS
54 COUNTRIES
5 CONTINENTS

Read more