The document discusses several modern inventions including x-ray machines, the internet, aluminum, personal computers, cameras, email, smartphones, and radar. It provides background on the inventors and key developments, as well as the purposes and impacts of each invention. Some of the inventors highlighted include Wilhelm Conrad Roentgen for x-rays, Robert Elliot Kahn and Vint Cerf for the internet, Hans Christian Oersted for isolating aluminum, and Heinrich Hertz and Christian Hülsmeyer for early work developing radar.

1. MODERN ERA
GROUP 3
Inventions Of The
Members:
Castillo, Frances Lei
Evedes, Jenevy
Rodriguez, Judith
Macaslin, Morelia
Cunanan, Riah
Cura, Tweetie
Dela Cruz, Wilma
Manlapaz, Michael Angelo

2. MODERN
ERA
• the present or recent times
• A period beginning in the last
quarter of the 20th century.

3. X-RAY MACHINES

4. WILHELM CONRAD ROENTGEN
• Discovered by Wilhelm
Conrad Roentgen (1895)
• Developed by Marie Curie
(1914)
• Accidential creation
• Named it "X", meaning
"unknown" Rays

5. X-RAY MACHINES
• First experiment on late
1895---- film of the hand of
his wife, Bertha
• First use were for an
Industrial Application

6. MARIE CURIE
• She invented mobile X-ray
unit (WW1)
• To save lives at the battlefield

7. X-RAY MACHINES
• Bullets on the body
were seen

8. INTERNET (1973)

9. ROBERT ELLIOT KAHN
• Robert Elliot Kahn is an American
electrical engineer, who, along with
Vint Cerf, first proposed the
Transmission Control Protocol and
the Internet Protocol, the
fundamental communication
protocols at the heart of the
Internet.

10. VINT CERF

11. INTERNET (PURPOSE)
• Provide Global access
to data
• Communications

12. INTERNET (USE)
• Is essential for advancing
research in science,
medicine, engineering and
design
• In maintaining global
defense and surveillance

13. INTERNET (IMPACT)
Advantages
• The depth of the change
• Makes them live easily
Disadvantages
• Risk of alienation
• Depression etc.

14. ALUMINUM

15. HANS CHRISTIAN OERSTED
Aluminium was first isolated by Hans
Christian Oersted in 1825 who reacted
aluminium chloride (AlCl3) with
potassium amalgam (an alloy of
potassium and mercury). Heating the
resulting aluminium amalgam under
reduced pressure caused the mercury
to boil away leaving an impure sample
of aluminium metal.

16. ALUMINUM (PURPOSES)
Aluminium is used in a
huge variety of products
including cans, foils,
kitchen utensils, window
frames, beer kegs and
aeroplane parts.

17. ALUMINUM (USES)
• Consumer Goods
• Construction
• Transportation
• Electrical

18. ALUMINUM (IMPACTS)
• Human - may cause
Alzheimer's disease and
breast cancer.
• Society - recognised as a
toxic agent in aquatic and
terrestrial ecosystems.
- greenhouse gas
emission.

19. PERSONAL COMPUTER (PC)

20. PERSONAL COMPUTER
• Personal computer works
by combining input, storage,
processing, and output. All
the main parts of a computer
system are involved in one of
these four processes.

21. PERSONAL COMPUTER
(PURPOSES)
• Input
• Storage
• Processing
• Output

22. PERSONAL COMPUTER (USES)
• Education
• Work
• Gaming

23. CAMERA

24. JOHANN ZAHN
• Johann Zahn - the
person who invented
the first camera in the
world.

25. CAMERA
• A device for
recording visual
images in form of
photographs, films
or video signals.

26. CAMERA
• Digital Camera - that
capture photographs in
digital memory.
• Camera Phones - able
to capture photographs
• Kyocera Visual Phone
VP-210

27. CAMERA
• Use and purpose
• Work
• Impact

28. EMAIL

29. EMAIL
• It simply allows you to
send and recieve
messages to and from
anyone with an email
address, anywhere in
the world.

30. RAY TOMLINSON
• Invented and Developed
EMAIL in 1972 by creating
it at ARPHANET's
networked Email system
• It became an important
mode of communication
today.

31. SMARTPHONES

32. SMARTPHONES
• Smartphones usecell
phone technology to send
and recieve data.

33. SMARTPHONES
• As smartphones have
evolved, app developers
have found new, ingenious
ways to ise hardware and
wireless connectivity to
make information instantly
available to users.

34. STEVE JOBS
• The person who
invented the
smartphone in the
world.

35. SMARTPHONES (PURPOSES)
• NIX for iOS
• LUNIX for ANDROID

36. SMARTPHONES (USES)
• Communication
• Education
• Business
• Gaming
• Photography

37. SMARTPHONES (IMPACT)
It is true that the smartphone has a sizeable impact on
society and other aspects of life. Smartphone has
impacted almost all walk of human life. The prominent
areas, where impacts of Smartphone are obvious
include business, education, health, and social life.
Mobile technology has drastically changed the cultural
norms and individual behaviors. Smartphone use in
society by educating users on how to use Smartphones
smartly.

38. RADAR

39. RADAR
• Is a detection system
that uses radio waves to
determine the range, angle,
or velocity of objects.

40. RADAR
• Radar was developed
secretly for military use by
several nations in the
period before and during
World War II.

41. HEINRICH HERTZ (1886)
• Heinrich Hertz started
with experiments by in late
19th century that showed
that radio waves were
reflected by metallic
objects.

42. CHRISTIAN HÜLSMEYER (1904)
• German inventor who
first used them to build a
simple ship detection
device intended to help
avoid collisions in fog
(Reichspatent Nr. 165546).

43. RADAR
• USE
• PURPOSE
• IMPACT

44. THANK
YOU!!!

45. Source:
https://www.biographyonline.net/scientists/modern-inventions.html