مبدأ ارخميدس

To read the English version click here.
توضح هذه التجربة أنه عند وضع جسم ما في سائل، يزيح الجسم كمية من السائل تساوي كتلتها كتلة الجسم نفسه. علاوة على ذلك، فإن حجم السائل المُزاح يساوي حجم الجزء المغمور من الجسم.

To read the English version click here.
توضح هذه التجربة أنه عند وضع جسم ما في سائل، يزيح الجسم كمية من السائل تساوي كتلتها كتلة الجسم نفسه. علاوة على ذلك، فإن حجم السائل المُزاح يساوي حجم الجزء المغمور من الجسم.
A gamified twist on classic Pong! Answer quiz questions correctly to recover lost balls. Teachers can customize questions for any subject. Built with CreateJS – play it free in your browser.
I conducted countless experiments in class throughout the course of my many years of teaching physics to motivate the students. However, I had never anticipated to find that nothing delighted the students as much as the simplest activity where I or the students made a light bulb light up by connecting a switch, wires and a battery.
توقفت عن التفكير كمبرمج في تلك المرحلة وعدت إلى التفكير كفيزيائي. لقد أذهلني كيف يمكننا محاكاة الظواهر الفيزيائية ببضعة أسطر من التعليمات البرمجية.
Looking back, I wish I had access to tools like DeepSeek. During my development process. In my recent experimenting with this open-source AI model, I’ve found it provides structured, research-paper-like responses with meaningful technical information from the first interaction. This would have significantly streamlined my research phase. Definitely, DeepSeek wouldn’t have appeared if ChatGPT hadn’t existed in the first place. But the super abilities that DeepSeek came with as it came into existence, plus being open-source, makes it super competent to the existing AI tools.
Newton’s first law states that when net force is zero, objects at rest remain at rest and objects in motion continue at constant velocity. This experiment uses an air cushion scooter to eliminate friction, demonstrating that with zero net force (weight balanced by track reaction), the scooter remains stationary when at rest and continues moving at constant speed when given an initial push, until an external force stops it.
These lines portray a tale of creation and vanishing. It describes the creation of a photon, its subsequent disappearance when an electron absorbs it on the cathode plate’s surface, the subsequent departure of the electron from the cathode, and lastly the eventual disappearance of the electron when it reaches the other plate and captured.