Deprecated (8192): Creation of dynamic property App\View\AppView::$Text is deprecated [CORE/src/View/View.php, line 1095]
Code Context

        $this->{$name} = $registry->{$name};
Cake\View\View::__get() - CORE/src/View/View.php, line 1095
include - ROOT/templates/Catalogs/view.php, line 78
Cake\View\View::_evaluate() - CORE/src/View/View.php, line 1181
Cake\View\View::_render() - CORE/src/View/View.php, line 1138
Cake\View\View::render() - CORE/src/View/View.php, line 769
Cake\Controller\Controller::render() - CORE/src/Controller/Controller.php, line 762
Cake\Controller\Controller::invokeAction() - CORE/src/Controller/Controller.php, line 548
Cake\Controller\ControllerFactory::handle() - CORE/src/Controller/ControllerFactory.php, line 140
Cake\Controller\ControllerFactory::invoke() - CORE/src/Controller/ControllerFactory.php, line 115
Cake\Http\BaseApplication::handle() - CORE/src/Http/BaseApplication.php, line 317
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 77
Authentication\Middleware\AuthenticationMiddleware::process() - ROOT/vendor/cakephp/authentication/src/Middleware/AuthenticationMiddleware.php, line 124
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 73
Cake\Routing\Middleware\RoutingMiddleware::process() - CORE/src/Routing/Middleware/RoutingMiddleware.php, line 161
Cake\Http\Runner::handle() - CORE/src/Http/Runner.php, line 73
Cake\Http\Runner::run() - CORE/src/Http/Runner.php, line 58
Cake\Http\Server::run() - CORE/src/Http/Server.php, line 90

An illustrated account of Newton's first ventures into optical experimentation. Using his own eyes as subjects, he seriously risked blinding himself with experiments such as staring directly into the sun or poking a small knife into his eye socket to see what effect this would have on his visual perceptions. Astonishingly, his eyesight remained excellent until his death at the age of over eighty.