MAKING A TELEPHONE CALLOPTICAL FIBRESFIND OUT MORETelecommunications began more than 160 years ago, with telegraphs and telephones working through wires. We still use wires – known as landlines…
X-RAY OF BINOCULARSREFRACTING TELESCOPEREFLECTING TELESCOPEFIND OUT MOREJust as our eyes cannot see small objects, so they cannot see things that are very far off. Even when things are millions of…
TRANSMITTING TELEVISION SIGNALSSTRIPED SCREENFLAT SCREENDIGITAL TELEVISIONFIND OUT MORETelevision converts the image from a camera lens into a stream of data that can be sent down a cable or…
WARNING!LOOPS IN THE ATMOSPHERESPOTS ON THE SUNNEUTRINOS FROM THE SUNSPACE WEATHERSOLAR ECLIPSEFIND OUT MOREDominating our corner of space is a star we call the Sun. It travels through space…
TOUCH RECEPTOR FINGER RIDGES BRAILLE FIND OUT MORE
Your sense of touch works by means of special sensory receptors scattered all over your body’s surface. These receptors allow you to…
UPWARD-FLOWING WATERSTANDING FIRMSTOMATAFIND OUT MOREIn this process, water evaporates from the surface of a leaf through microscopic pores known as STOMATA. The loss of water creates a…
WOODY TISSUEFORESTSEVERGREEN TREESDECIDUOUS TREESFIND OUT MOREThese tall, seed-producing plants live for many years and do not die in winter. Trees have a single woody stem, called a trunk,…
MATTER IN THE UNIVERSEOUR PLACE IN THE UNIVERSECROWDED CITYOUR PLANETTHE SOLAR SYSTEMOUR GALAXYTHE EXPANDING UNIVERSEWHERE SPACE BEGINSUNIVERSAL FORCESFIND OUT MOREEverything that exists – stars,…
THE RINGS OF URANUSBLAND ATMOSPHERETHE BIG FIVEBIOGRAPHY: WILLIAM HERSCHEL German, 1738-1822FIND OUT MOREEnglish astronomer William Herschel discovered Uranus in 1781. It was the first planet…
CLOUDY ATMOSPHEREFIND OUT MOREVenus is only a little smaller than Earth, is made up of rock, and has an atmosphere, but it is otherwise quite unlike our planet. Its surface is covered with…
