CONTACT LENSCONCAVE AND CONVEX LENSESFRESNEL LENSSLIDE PROJECTORMAGNIFYING GLASSFIND OUT MOREA lens is a piece of transparent plastic or glass that can make things seem to change size. It works…
HEARING ABILITYDOPPLER EFFECTULTRASOUNDFIND OUT MORESound can be low-pitched, like the rumble of a large truck, or high-pitched, like a whistle. The pitch of a sound depends on the frequency of…
DANGER: RADIATIONTYPES OF RADIOACTIVITYRADIOTHERAPYFIND OUT MOREThe atoms of some chemical elements are unstable. They try to rearrange themselves to make more stable atoms. In the process, they…
UNDERWATER EYEHOME HELPINDUSTRIAL ARMHUMANOID ROBOTSFIND OUT MORERobots are machines that behave a bit like people, and can perform difficult or repetitive tasks. HUMANOID ROBOTS even look like…
ELECTROMAGNETELECTROMAGNET AT WORKMAGNETIC LEVITATIONELECTROMAGNET IN ACTIONBIOGRAPHY: HANS CHRISTIAN OERSTED Danish, 1777-1851BIOGRAPHY: MICHAEL FARADAY British, 1791-1867TRANSFORMERSFIND OUT…
PARTS OF THE EYE IMAGE FORMATION FROM EYES TO BRAIN CHANGING PUPIL SIZE COLOUR VISION FIND OUT MORE
Whenever we are awake, our eyes work constantly to collect information about the…
LIMESTONEFIND OUT MOREMany cleaning products, such as soap and oven cleaner, are bases. Bases neutralize (cancel out) acids. Alkalis are bases that dissolve in water. Strong bases, such bleach,…
HEART DISEASE INFECTIOUS DISEASES CANCER FIND OUT MORE
When a person has a disease, a part of that person’s body fails to function properly. Diseases produce different patterns of…
LAWS OF MOTIONINERTIAMOMENTUMFIND OUT MOREDynamics is the study of how objects move when forces act on them. Normally objects stay still or move along at a steady pace. They resist changes in…
NON-MATTERMATERIAL PROPERTIESPARTICLESFIND OUT MOREEverything you can hold, taste, or smell is made of matter. Matter makes up everything you can see, including clothes, water, food, plants,…
