| 177701. |
Who discovered bacteria in 1683
|
1 |
1 |
100 |
| 177702. |
In what year did Anton van Leeuwenhoek discover bacteria
|
1 |
1 |
100 |
| 177703. |
Who invented barbed wire in 1873
|
1 |
1 |
100 |
| 177704. |
In what year did Joseph E. Glidden invent barbed wire
|
1 |
1 |
100 |
| 177705. |
Who invented the barometer in 1643
|
1 |
1 |
100 |
| 177706. |
In what year did Evangelista Torricelli invent the barometer
|
1 |
1 |
100 |
| 177707. |
Who invented the first MODERN bicycle in 1884
|
1 |
1 |
100 |
| 177708. |
Who founded the FIRST "Big Bang" theory in 1927 (the universe originated with a huge explosion)
|
1 |
1 |
100 |
| 177709. |
Who founded the knowledge of blood circulation
|
1 |
1 |
100 |
| 177710. |
In what year did William Harveyfound the knowledge of blood circulation
|
1 |
1 |
100 |
| 177711. |
Who invented braille in 1829
|
1 |
1 |
100 |
| 177712. |
In what year was braille invented
|
1 |
1 |
100 |
| 177713. |
Who invented the conical bullet
|
1 |
1 |
100 |
| 177714. |
In what year did Claude Minie invent the conical bullet
|
1 |
1 |
100 |
| 177715. |
Who was the inventor of the calculating machine in 1614
|
1 |
1 |
100 |
| 177716. |
Who was the inventor of the slide rule in 1632
|
1 |
1 |
100 |
| 177717. |
Who was the inventor of the digital calculator in 1642
|
1 |
1 |
100 |
| 177718. |
In what year did John Napier invent the calculating machine
|
1 |
1 |
100 |
| 177719. |
In what year did William Oughtred invent the slide rule
|
1 |
1 |
100 |
| 177720. |
In what year did Blaise Pascal invent the digital calculator
|
1 |
1 |
100 |
| 177721. |
In what year did Melville R Bissell invent the carpet sweeper
|
1 |
1 |
100 |
| 177722. |
In what year was the car radio invented by William Lear and Elmer Wavering
|
1 |
1 |
100 |
| 177723. |
Who invented cement in 1824
|
1 |
1 |
100 |
| 177724. |
In what year did Joseph Aspdin invent cement
|
1 |
1 |
100 |
| 177725. |
Who invented chewing gum in 1848
|
1 |
1 |
100 |
| 177726. |
In what year did John Curtis invent chewing gum
|
1 |
1 |
100 |
| 177727. |
Who invented the pendulum clock in 1656
|
1 |
1 |
100 |
| 177728. |
In what year did Christian Huygens invent the pendulum clock
|
1 |
1 |
100 |
| 177729. |
What company invented the compact disk in 1972
|
1 |
1 |
100 |
| 177730. |
In what year did RCA invent the compact disk
|
1 |
1 |
100 |
| 177731. |
Who invented condensed milk in 1853
|
1 |
1 |
100 |
| 177732. |
In what year did Gail Borden invent condensed milk
|
1 |
1 |
100 |
| 177733. |
Who defined the contagion theory (infectious diseases caused by living agent transmitted from person to person) in 1546
|
1 |
1 |
100 |
| 177734. |
In what year did Girolamo Fracastoro define the contagion theory
|
1 |
1 |
100 |
| 177735. |
Who defined the continental drift theory in 1858
|
1 |
1 |
100 |
| 177736. |
In what year did Antonio Snider-Pellegrini define the continental drift theory
|
1 |
1 |
100 |
| 177737. |
In what country were cosmetics first used
|
1 |
1 |
100 |
| 177738. |
In what year were cosmetics first used
|
1 |
1 |
100 |
| 177739. |
Who first postulated the cosamic string theory
|
1 |
1 |
100 |
| 177740. |
In what year did Thomas Kibble first postulate the cosamic theory
|
1 |
1 |
100 |
| 177741. |
Where was the crossbow invented
|
1 |
1 |
100 |
| 177742. |
In what year was the crossbow invented
|
1 |
1 |
100 |
| 177743. |
The elevator was invented by
|
1 |
1 |
100 |
| 177744. |
In what year did Elisha Otis invent the elevator
|
1 |
1 |
100 |
| 177745. |
Who discovered the fermentation process in 1860
|
1 |
1 |
100 |
| 177746. |
In what year was the fermentation process discovered by Louis Pasteur
|
1 |
1 |
100 |
| 177747. |
Who invented fiber optics
|
1 |
1 |
100 |
| 177748. |
In what year was fiber optics discovered by Narinder Kapany
|
1 |
1 |
100 |
| 177749. |
Frozen food was first developed by
|
1 |
1 |
100 |
| 177750. |
Gunpowder was invented in
|
1 |
1 |
100 |
| 177751. |
In what year was gunpowder invented
|
1 |
1 |
100 |
| 177752. |
The gyrocompass was invented by
|
1 |
1 |
100 |
| 177753. |
In what year did Elmer Sperry invent the gyrocompass
|
1 |
1 |
100 |
| 177754. |
After whom was Halley's Comet named
|
1 |
1 |
100 |
| 177755. |
Who invented the holograph
|
1 |
1 |
100 |
| 177756. |
In what year was the holograph invented
|
1 |
1 |
100 |
| 177757. |
Who developed the Ice age theory in 1840
|
1 |
1 |
100 |
| 177758. |
Who developed the LCD (liquid crystal display)
|
1 |
1 |
100 |
| 177759. |
In what year was the LCD first developed
|
1 |
1 |
100 |
| 177760. |
Who invented the first bifocal lens
|
1 |
1 |
100 |
| 177761. |
In what year was the first bifocal lens developed
|
1 |
1 |
100 |
| 177762. |
Who developed the first cylinder lock
|
1 |
1 |
100 |
| 177763. |
In what year was the first cylinder lock developed
|
1 |
1 |
100 |
| 177764. |
Who invented the 1st generation machine gun in 1718
|
1 |
1 |
100 |
| 177765. |
Who invented the 2nd generation machine gun in 1861
|
1 |
1 |
100 |
| 177766. |
In what year did James Puckle invent the first generation machine gun
|
1 |
1 |
100 |
| 177767. |
In what year did Richard J Gatling invent the second generation machine gun
|
1 |
1 |
100 |
| 177768. |
Who was the inventor of the phosphorus match
|
1 |
1 |
100 |
| 177769. |
In what year did Francois Derosne invent the phosphorus match
|
1 |
1 |
100 |
| 177770. |
Who invented the microphone
|
1 |
1 |
100 |
| 177771. |
In what year did Charles Wheatstone invent the microphone
|
1 |
1 |
100 |
| 177772. |
Who invented the microwave oven
|
1 |
1 |
100 |
| 177773. |
In what year was the microwave oven invented
|
1 |
1 |
100 |
| 177774. |
Who invented the moving assembly line in 1913
|
1 |
1 |
100 |
| 177775. |
IN what year did Henry Ford invent the moving assembly line
|
1 |
1 |
100 |
| 177776. |
Who first discovered the existence of Neptune
|
1 |
1 |
100 |
| 177777. |
In what year did Johann Galle first discover the existence of Neptune
|
1 |
1 |
100 |
| 177778. |
Who discovered the neutron
|
1 |
1 |
100 |
| 177779. |
In what year was the neurton first discovered
|
1 |
1 |
100 |
| 177780. |
Nitroglycerin was developed by
|
1 |
1 |
100 |
| 177781. |
In what year did Ascanio Sobrero develop nitroglycerin
|
1 |
1 |
100 |
| 177782. |
Who developed the first nuclear reactor
|
1 |
1 |
100 |
| 177783. |
In what year did Enrico Fermi develop the first nuclear reactor
|
1 |
1 |
100 |
| 177784. |
Who invented the first oil well
|
1 |
1 |
100 |
| 177785. |
In what year was the first oil well invented
|
1 |
1 |
100 |
| 177786. |
Who discovered the ozone
|
1 |
1 |
100 |
| 177787. |
In what year did Christian Schonbein discover the ozone
|
1 |
1 |
100 |
| 177788. |
Who developed the first internal pacemaker
|
1 |
1 |
100 |
| 177789. |
In what year did Clarence Lillehie invent the first internal pacemaker
|
1 |
1 |
100 |
| 177790. |
Paper was invented in China in
|
1 |
1 |
100 |
| 177791. |
The parachute was invented in 1783 by
|
1 |
1 |
100 |
| 177792. |
In what year did Louis Lenormand invent the parachute
|
1 |
1 |
100 |
| 177793. |
Who developed the laws of planetary motion
|
1 |
1 |
100 |
| 177794. |
Who invented plate tectonics
|
1 |
1 |
100 |
| 177795. |
Where was the forked plow invented
|
1 |
1 |
100 |
| 177796. |
When was the forked plow invented
|
1 |
1 |
100 |
| 177797. |
Who discovered the positron in 1932
|
1 |
1 |
100 |
| 177798. |
In what year did Carl Anderson discover the positron
|
1 |
1 |
100 |
| 177799. |
Who invented the pressure cooker (early version)
|
1 |
1 |
100 |
| 177800. |
In what year did Denis Papin invent the pressure cooker
|
1 |
1 |
100 |