April 30, 2008
Like the Deep Purple song…
Identify and connect:
Cracked by: varuns88 , Dibyo , sidsen , RajT , Tathagata Chatterjee , sandesh , Prasad , Keerthi Kiran M , yaksha , shashank and BiGFooT.
Answer: (1) is a depiction of the legend that Archimedes used giant reflectors to construct a heat ray and burn ships with it from a distance. Many scientists doubted the veracity of this and one, Ionis Sakkas, took it upon himself to check whether it is possible. (2) is a photo of his attempt.
The connect, of course, is Heat Rays Of Death ™
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April 30th, 2008 at 8:43 pm, GMT -0700 ( 1209613439 )
1.A fresco depicting the seige of Syracuse,where Archimedes used the “burning glass” to burn down Roman ships.
2.Greek scientist,Ioannis Sakkas,lined up 60 greek sailors,each holding a mirror to catch the sun’s rays and direct them to burn down a wooden boat.
connect-> Deathray?
April 30th, 2008 at 9:01 pm, GMT -0700 ( 1209614487 )
1. Wall painting from the Stanzino delle Matematiche in the Galleria degli Uffizi (Florence, Italy). Painted by Giulio Parigi (1571-1635) in the years 1599-1600. Depiction of Archimedes using mirrors to set fire to the ships during the Seige of Syracuse. Archimedes of Syracuse (c. 287 BC – c. 212 BC) was a Greek mathematician, physicist, engineer, inventor, and astronomer. Although few details of his life are known, he is regarded as one of the leading scientists in classical antiquity. Among his advances in physics are the foundations of hydrostatics and the explanation of the principle of the lever.
2. A test of the Archimedes heat ray was carried out in 1973 by the Greek scientist Ioannis Sakkas. The experiment took place at the Skaramagas naval base outside Athens. On this occasion 70 mirrors were used, each with a copper coating and a size of around five by three feet (1.5 by 1 m). The mirrors were pointed at a plywood mock-up of a Roman warship at a distance of around 160 feet (50 m). When the mirrors were focused accurately, the ship burst into flames within a few seconds. The plywood ship had a coating of tar paint, which may have aided combustion.
Connection is Archimedes use of mirrors as a ‘death ray’.
I hope this answer is sufficient, given your unfair attitude towards my answer yesterday.
May 1st, 2008 at 1:48 am, GMT -0700 ( 1209631727 )
archimedes heat ray and sakas heat ray. coincidentally had asked this just a few days back.
May 1st, 2008 at 6:25 am, GMT -0700 ( 1209648303 )
Archimedes’ death ray.
Pic 1 is a sketch of Greek soldiers using their shields and mirrors to delfect sun’s rays onto incoming ships.
Pic 2 is an experiment by Greek scientist Dr. Ioannis Sakkas who lined up 60 sailors to see if it was possible to burn a ship that way.
May 1st, 2008 at 6:40 am, GMT -0700 ( 1209649217 )
1) Painting by Gulio Parigi titled : The Sige of Syracuse
2) A Greek scientist, Dr. Ioannis Sakkas, curious about whether Archimedes could really have used a “burning glass” to destroy the Roman fleet in 212 BC lined up nearly 60 Greek sailors, each holding an oblong mirror tipped to catch the Sun’s rays and direct them at a wooden ship 160 feet away.
Connect : “Heat Ray” or “Burning Glass” experiment.
Regards,
Tathagata Chatterjee
May 1st, 2008 at 6:53 am, GMT -0700 ( 1209649995 )
To add to what I wrote :
Connect : Archimedes ( who conducted the Heat Ray or Burning Glass experiment)
Regards,
Tathagata Chatterjee
May 1st, 2008 at 8:25 am, GMT -0700 ( 1209655542 )
1. Siege of Syracuse
2. Reproducing the same effect, with multiple mirrors.
Archimedes produced the death ray by concentrating beam from several mirrors to burn ships…
May 1st, 2008 at 9:20 am, GMT -0700 ( 1209658802 )
1 is a picture depicting Archimedes’ burning mirror, where a ship out at sea could be set fire using parabolic mirror or a bunch of them
2 is a pic from the 1972 experiment by Dr. Ioannis Sakkas to check if this could actually be achieved. he lined up abt 60 greek soldiers with mirrors and successfully set fire to a ship.
May 1st, 2008 at 9:25 am, GMT -0700 ( 1209659144 )
1. Archimedes, the great Greek mathematician and physicist who lived over 2,000 years ago, used, apparently, solar energy as a weapon to burn ships using bronze parabolic reflectors.
2. in 1973 Dr. Ioannis Sakka, Greek engineer, conducted a series of experiments that demonstrated the possibility of fact. He used 50 mirrors painted bronze to reflect sunrays on a small row boat. The boat was made of plywood covered with tar. Within seconds the boat began to smoke, and after two minutes broke into flames.
Connect: Archimedes heat ray experiment.
However, MIT students tried to burn a ship on MythBusters and were mostly unsuccessful.
May 1st, 2008 at 9:37 am, GMT -0700 ( 1209659821 )
burning-glass
during the Siege of Syracuse Archimedes repelled an attack by Roman forces with a burning-glass
May 1st, 2008 at 10:33 am, GMT -0700 ( 1209663215 )
1. Archimedes’ idea of burning the ships using reflecting mirrors to defend the Sicilian colony of Syracuse.
2.Germans trying that same thing during World War 1?
( A wild guess )
May 1st, 2008 at 10:43 pm, GMT -0700 ( 1209706984 )
1. Illustration of Archimedes heat Ray
2. Experimental setup by Ioannis Sakkas to verify if it was possible to use the \
May 1st, 2008 at 11:53 pm, GMT -0700 ( 1209711201 )
@Dibyo: More than sufficient, thank you. But why do you consider it unfair?
I’m not sure if you read my response to your 2nd post on that page, but I’ve tried to explain my reasons there. The matter is, of course, up for discussion in that thread at any time. (And I’m always ready for a good old-fashioned flamewar anyway :))