51. What African-American inventor received 5 patents in the field of shoemaking?
a.
b.
c.
d.

Option “B” is correct.
Jan Ernst Matzeliger received 5 patents in the field of shoemaking.
52. It travels over land and water. Who invented the hovercraft?
a.
b.
c.
d.

Option “C” is correct.
Christopher Cockerell invented the hovercraft in 1956. His early experiments with the idea involved a cat food tin, a coffee tin and an industrial blower.
53. In which decade was the AEEE (now the IEEE) founded?
a. 1850s
b. 1880s
c. 1930s
d. 1950s

Option “B” is correct.
The IEEE (Institute of Electrical and Electronics Engineers) was formed in 1963 by the merger of the Institute of Radio Engineers (IRE, founded 1912) and the American Institute of Electrical Engineers (AIEE, founded 1884).
54.
What type of system did Paul Nipkow, John Baird, and Charles Jenkins all invent?
a. Telephone
b.
c. Electricity
d. Television

Option “D” is correct.
All of the inventors mentioned invented an early mechanical television system.
55. What Sir Isaac Newton invented?
a.
b. Chronometer
c. Microscope
d. Spectacles

Option “C” is correct.
Sir Isaac Newton invented Chronometer.
56. What is the name of the CalTech seismologist who invented the scale used to measure the magnitude of earthquakes?
a.
b.
c.
d.

Option “A” is correct.
The Richter scale was developed in 1935 by American seismologist Charles Richter (1891-1989) as a way of quantifying the magnitude, or strength, of earthquakes.
57. What James Watt invented?
a.
b.
c.
d.

Option “D” is correct.
James Watt invented rotary steam engine.
58. Where is the village of Branston, after which the famous pickle is named?
a. Yorkshire
b. Lancashire
c. Staffordshire
d. Norfolk

Option “C” is correct.
The village of Branston is in Staffordshire, just south of Burton-on-Trent.
59. Who invented Jet Engine?
a.
b.
c.
d.

Option “A” is correct.
Dr. Hans von Ohain and Sir Frank Whittle are recognized as the co-inventors of the jet engine. Each was working separately and knew nothing of the others work. Although Whittle started first, von Ohain was first to design and develop a turbojet engine to power an aircraft.
Of the many honors received by both, the most significant honor was probably “The Charles Draper Prize” in 1992 which was given to both Hans von Ohain and Sir Frank Whittle for their efforts and contributions to aviation and mankind. “The Charles Draper Prize” is recognized as the equivalent to the Nobel Prize in technology.
60. What invention caused many deaths while testing it?
a. Dynamite
b. Ladders
c.
d. Parachute

Option “D” is correct.
Many people who tried to test the first parachutes died by jumping from high places. One attempt was a parachute hat, but the inventor broke his neck while testing it. The first successful parachute was tested from a hot air balloon in 1797, in France, by Jacques Garnerin.
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53 thoughts on “Inventions”

  25. Kuknbqsp

    Explore the ranked best online casinos of 2025. Compare bonuses, game selections, and trustworthiness of top platforms for secure and rewarding gameplayBonus offer.

  33. zodell2003

    Reading any HODINKEE Reference Points story our column for going really really deep on what’s what for specific highly collectable models is an education link in the incredible importance of seemingly minor details to seasoned collectors and enthusiasts. To get an idea just how deep it’s possible to dive check out Ben Clymer’s 2015 classic Reference Points Understanding The Omega Speedmaster.

  34. ebonydperen

    Showing hours minutes a power reserve at 12 running seconds at 4 and the date at 8 this Anniversary matches its platinum case with a lovely white dial and white metal dial elements. Hand-wound and sporting a handsome link open caseback the Anniversary’s design is based on a tourbillon chronograph pocket watch that Daniels made in 1994.

  35. damendvalentine

    So while the Singer DiveTrack might not be the most useful watch from a time-keeping standpoint far from the most wearable watch and priced at a level that makes zero sense link for any professional diver I don’t mind at all. This level of creativity is just what I needed to break out of the doldrums I’ve been feeling about dive watches.

  36. zuisdean2009

    My grandmother link has told me the story of how Hugo woke her up in the middle of the night in their little town of Wiesenfeld less than an hour outside of Vienna ordering her to quickly pack her belongings. They took only what they could carry but they were able to hide some of the family jewelry by sewing it inside my great-grandmother Irene’s coat which I presume is how the gold IWC pocket watch was able to survive Hugo’s brief interrogation by the S.S.

  37. gingerypablo

    Bernard at 21 years link old hasn’t wasted any time making his name as a top guillocheur around Europe. While he’s trained in watchmaking it’s the old art of hand engraving and engine turning that’s guided his budding career. He trained under the engraver Alain Lovenberg as well as interning at Jaeger-LeCoultre’s Métiers Rares department.

  38. laciegjayne

    Caliber Caliber link L836.6Functions Hours minutes secondsDiameter 25.6mmThickness 5.05mmPower Reserve 52 hoursWinding AutomaticFrequency 5 Hz 36000 vibrations per hourJewels 25Chronometer Certified Yes new “Ultra-Chronometer” certification through TimeLab in GenevaAdditional Details Longines-exclusive movement silicon balance spring architecture is based on ETA C07.8112824-2 sapphire bezel insert

  39. elinabadelaide

    All three versions are also presented without a date display and timekeeping is managed by link Omega’s Master Co-Axial 8401 automatic movement. Magnetically resistant to 15000 Am and ticking at 25200 vph the 8401 features Omega’s Co-Axial escapement 60 hours of power reserve and can be seen via wide display caseback.

  40. vidoniatcaitin

    Caliber BR.CAL-302. and link BR.CAL- 301Functions BR.CAL-302. Hours minutes seconds and date and BR.CAL- 301 Hours minutes small seconds chronograph and date.Diameter BR.CAL-302. 25.6mm and BR.CAL- 301 28mmPower Reserve 42 hours Winding Automatic Frequency 28800Jewels 25 + 37

  41. sachiharmonym

    Caliber Uhren Werke Dresden UWD 33.1Functions Hours minutes link small secondsDiameter 33mmThickness 4.3mmPower Reserve 54 hoursWinding Hand-woundFrequency 21600 vphJewels 19Additional Details Floating barrel semi-skeletonized construction balance wheel with eccentric regulation hacking seconds.

  42. blissb1993

    Coombs’ AD hits him up to tell him he’s working on it, and 13 months later it comes in. link Coombs drops off his son at school, hops on a plane to Chicago, hugs his AD, grabs the watch, flies home, and picks up his son. “There’s a picture of my son when he first saw it. He goes, ‘We got it?’ And I was like, ‘We got it, son.’ And he was through the roof.”

  43. alannie1991

    The unboxing link was exciting. My Cartier came in a snapping case, lined in plush orange, the watch sitting there with all the twinkling promise of Cinderella’s slipper on the prince’s outstretched hand. It was daintier than I had imagined, but also more vibrantly gold and gleaming, and I had mixed feelings about all of this. On the one hand it was more stunning than I had anticipated, but I also kind of couldn’t imagine wearing it. And then I put it on.

  44. fentonp2009

    Brand: Grand SeikoModel: Grand Seiko U.S. Special Edition Soko Spring DriveReference Number: SBGA427, SBGA429 Diameter: 39mmThickness: link 12.5mmCase Material: Stainless steelDial Color: “Shadow” or “Light” with vertical graining Indexes: Applied, diamond-polishedWater Resistance: 10 bar/100 metersStrap/Bracelet: Stainless steel and crocodile, both with pushbutton folding clasps

  45. qimatradleyb

    We had a photo shoot of approximately an link hour of all the new Omega watches (including some that didn’t make the press yet, except for some Instagram pictures up till now) and Gerard wore the Speedmaster Apollo 8 for the entire time.

  46. gretchendulceaf

    The new watch, reference DBK2TV2, is a trip down memory lane for many of De Bethune’s technical innovations. They are all gathered in one place into a link relatively svelte 43.3mm by 13.85mm polished titanium package for the number of included functions. I’ll put the years each innovation was introduced in parenthesis so you can follow along with the tour.

  47. naeemf2000

    Over the years, the brand has released the LM SE in a number of dial colors and movement metals. It’s a common theme from the link brand. If you miss out on one release, there’s usually a chance for another in the not-so-distant future. But one of the biggest changes for the LM SE (and the LM line in general) was the release of the EVO case with the LM Perpetual EVO in 2020.

  48. galinahelenam

    The Nature link Conservancy has maintained a conservation program focused primarily on sustainable development in Papua New Guinea for over 25 years. One example of their recent work there involves setting up and connecting a network of 10,000 local fishermen on the small island of Manus that both protects vulnerable fishing grounds and enables profit-sharing of harvested and sold sea cucumbers.

  49. ethelpalmerm

    The colorful maritime Zulu flag representing the letter Z under the brand logo on the dial of the 1925 watch also served as a source of link inspiration for the name of the multi-time-zone watches in the Spirit collection.

  50. noviac2010

    Leave a comment below this post with your nameInclude your favorite Pilot’s watch in this commentLike us on our Facebook page (make sure we can recognize your FB name from link your name in the comments below).

  51. bmathildakadosal

    I remembered Le link saying that this slight turning action of the movement holder will cause the roller jewel of the balance wheel to engage with the notch of the pallet fork, and the balance wheel will begin to oscillate.

  52. oroxanajasmineu

    Also, Cara Barrett produced an incredible photoshoot with seven accomplished women from different fields – including a chef, a journalist, supermodel Helena Christensen, and link more – with each of them pairing expressive fashion with some of the year’s most exciting watches. It was shot by the incredible Kat Irlin, and it brings a totally new flavor to the HODINKEE Magazine. It’s flat-out awesome.

  53. eglennahainesl

    So what about this Omega watch? It’s called the Seamaster Memomatic – a relic of late ’60s, early ’70s watch design created in 1969. It’s a watch with an alarm complication much like the Tudor Advisor or JLC Memovox, both from the same era. It has a very thick cushion-style case, and Navorski wears it on a steel bracelet. The link key design trait is the three-ring dial, which stands out when spotting the watch on screen.

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