Science and Technology – osnova na prezentáciu

Science and Technology – osnova na prezentáciu

THEY HAVE EXISTED AS LONG AS MANKIND ITSELF
MANKIND AND A LONG WAY OF ITS EXISTENCE

In pre-historic times people ̀s lives and their needs were simple

They hunted for food

Made tools from stone, wood, horns

Used simple clothes to protect themselves from the cold

An excellent tool was the human hand

PEOPLE STARTED CHANGING THE WORLD

They started to make their life easier and more comfortable

Learnt how to use water and wind for energy and built water mills and windmills

Made a lot of explorations, discoveries, developments in astronomy, philosophy, medicine and biology

The most important invention was the printing press

SCIENTISTS

• Try to enquire knowledge of the physical world and uses different scientific instruments
• Types of scientists

inventor, engineer, physicist, chemist, astronomer, alchemist, philosopher, biologist, pharmacologist, mathematician

THE MOST FAMOUS NAMES

• HENRY FORD – invented car
• NEIL ALDEN ARMSTRONG – commander of the Apollo 11
• MICHAEL FARADAY – discovered electromagnetic induction, constructed electric dynamo (physicist, chemist)
• JAMES WATT – invented steam engine
• ALEXANDER GRAHAM BELL – invented telephone, metal detector
• A. EDISON – invented phonograph, electric bulb
• CHARLES ROBERT DARWIN – theory of natural selection
• SIR ISAAC NEWTON – theory of universal gravitation, system of measurement
• BENJAMIN FRANKLIN – lightening rod, swimfins, bifocal glasses
• SIR ALEXANDER FLEMING – discovered and isolated penicillin

INDUSTRIAL REVOLUTION

• It brought important inventions
• People started to use new materials such as iron, steel, glass, rubber, plastics
• Small manufacturing businesses changed into large factories
• Hand-made goods were replaced by machine-made products
• Mass production started and all sorts of goods became cheaper

INVENTIONS IN THE 20th CENTURY

• TV
• AIRPLANE
• COMPUTER
• MOBILE PHONE
• INTERNET
• VIDEOPHONE

WRONG INFLUENCE OF SCIENCE AND TECHNOLOGY

• NEW DRUGS
• PESTICIDES
• FERTILIEZERS
• TOXIC WASTE
• SMOG
• OZON LAYER
• ACID RAIN
• GREENHOUSE GASES
• EXHAUSTED FUMES
• AIR, WATER AND LAND POLLUTION
• POLLUTED GROUNDWATER
• CONGESTION

SCIENCE HAS BROUGHT MANY USEFUL THINGS

• Robots directed by computers do hard work
• Easier transactions – credit and phone cards
• Laser used in surgery
• Genetic engineering
• New communication forms – phone satellites, computers
• New appliances or entertainment equipment – washing machine, dishwasher, microwave oven, TV, DVD, CD players