Lydia Tan

Have you ever seen the rainbow effect that glass produces as the sun shines upon them? Or wondered how spectacles help in allowing us to see more clearly? Well, these are examples of a phenomenon known as refraction . In this article, we will explore more about what refraction is and some terminologies that are often used when talking about refraction, specifically in the context of light. What is refraction? Refraction is a phenomenon that all waves have. According to Britannica Editors...

What does it feel like to be watched as you work on something? Does it feel pressurising? Do you feel stressed? Does that make you want to do better to show to the person that you are able to do the job you are doing well? If your answer to the last question is yes, that is the Hawthorne effect in action! …Well, somewhat. Based on the known definition of the effect, this would be a correct example of the effect. However, due to some reasons which we will explain later on in this article,...

In a previous article, we learnt the importance of alternating currents (also known as AC) and its role of transmitting electricity over long distances. In this article, we will learn the physics behind generating AC. Then, we will explore how transformers work and we can answer the question that was left hanging in the previous article: why can AC be transformed, and not direct current (DC)? How is AC generated? The process of AC generation relies on the conversion of mechanical energy to...