Posts tagged as light

Points on Photosynthesis – Junior Cert Science

Photosynthesis Green plants make food by photosynthesis. Photosynthesis occurs in the leaves of a plant. The green chemical chlorophyll is needed for photosynthesis. Chlorophyll traps light energy and uses it to combine carbon dioxide and water. This forms glucose and oxygen. Leaves have air spaces between their leaves called stomata. The three things needed for… Continue Reading →

Arrangement of Electrons in the Atom

To understand the arrangement of electrons in atoms, Neils Bohor understood the spectra. When white light (eg. sunlight or light from an ordinary electric light bulb) is passed through a prism, the white light is broken up into many different colours. This called a continuous spectrum. But when Bohor carried out this experiment… Continue Reading →

Introduction to Light – Geometrical Optics

Light is a form of energy that travels away from the source at the speed of about . Reflection Reflection is the bouncing of light off an object. Laws of Reflection of Light The incident ray, the normal at the point of incidence and the reflected ray all lie in the same plane. The angle of incidence is equal to… Continue Reading →