Abstract: Partial discharge (PD) is a widely adopted method for the internal insulation detection of electrical transformers. The impact of the refraction and diffraction of the ultrasonic signal in ...

The formation of a rainbow requires the observer to be between the sun and falling rain, with the rain in front and the sun behind. Sunlight passes from behind the observer, refracts as it enters each ...

A recent review article published in the journal Science highlights how modern optical sciences are increasingly leveraging the principles of non-Hermitian physics, resonant phenomena, and ...

Air Marshal Dilip Kumar Patnaik (Retd) recalled an incident 14-15 years ago where a missile was fired at what was later identified as an illusion. Patnaik firmly ruled out the possibility of UFOs, ...

Diffraction refers to the bending of waves, such as light, when they encounter obstacles or pass through small openings. The size of the opening relative to the wavelength of light influences the ...

VHF is widely used in broadcasting, voice and data communications, avionics, and even some types of radar, but there is a widely held misconception that most VHF propagation is simply “line of sight.” ...

SINGAPORE – If Philippe Starck is a household name, it is probably because he has designed more household products than any other designer in the world. He has designed furniture, home accessories, ...

Wave Optics Class 12 MCQ Questions: In this chapter, we will be discussing the wave model of light which in 1678, the Dutch physicist Christiaan Huygens had put forward. The wave model could ...

Wave diffraction. Wave impinges on a narrow and a broad slit. comparison of large and small opening. waves spread out beyond the gap. Vector diagram. Wave diffraction. Wave impinges on a narrow and a ...