Loading the player...

Solar mirrors of Archimedes

(21) | 19/12/2011 | Translate:

Issue: *

Your Name:

Your Email:

Details:

Undoubtedly the most controversial achievement of Archimedes and what passed in his country legend, the construction of solar mirrors which concentrating and focusing the Sun's rays, burned the Roman ships besieging Syracuse. Translate: youtube.com/user/BraveManNewWorld

Leave a Reply Cancel reply

Watching the eclipse with a telescope On Monday, April 8, 2024, Americans had the opportunity to witness a total solar eclipse. A young man wanted to watch the moon pass in front of the Sun with a telescope, something that is extremely dangerous. The young man will burn his face and fortunately will not put his eye against the accumulated rays of the Sun. During a solar eclipse you should NEVER look at the Sun with a camera lens, telescope, binoculars or any other optical device even if you wear eclipse glasses or other filters. Concentrated solar rays will pass through the filter and cause serious eye injury.
Making a bronze hammer The casting and construction of a bronze hammer by the user "Almost Perfect Restoration" in Youtube.
Building a simple hydrogen generator The user of Youtube "Skill Make", he shows us how he makes a generator from old batteries that decomposes water into hydrogen and oxygen, to create hydrogen gas.
An American proves that houses in his country are not made of paper Many say that homes in the United States are made of paper. An American wants to dispel this myth, cutting a partition in the middle.
The reality behind them “primitive constructions” A photographer from Cambodia, randomly located places where hundreds of YouTube channels use to shoot videos with "primitive constructions", where they build swimming pools and huts with simple hand tools. Located in a forest in the province of Siem Reap, except for dangerous holes that are traps for animals, rubbish was found, including cans of beer, plastic, cement bags and temporary shelters made of bricks. The constructions were done just a few meters from each other, in a fairly small forest.
A cargo ship breaks in half before sinking The scary moment when the Ukrainian cargo ship Arvin breaks in the middle of the waves, before sinking in the Black Sea on January 16, 2021. Six crew members were rescued, three were found dead, while efforts continued to rescue the remaining three, who are ignored. The ship Arvin, which sank near the coast of Turkey, he was 46 years old (built in 1975).
Construction of a chain for ship anchors Inside a machine shop, we see a large piece of metal bend to turn into a link in a huge chain.
Ship collides with crane in port (Korea) Monday 6 April 2020, Shopping Milano Bridge ship collided with a crane at the port terminal Busan, South Korea. The imposing structure collapsed onto the quay and the ship's stern. A worker is injured slightly.
A machine that reproduces the solar system British planetarium maker Staines & Sons has created a model of the solar system, which faithfully reproduces the movements of each planet and its satellites around the sun, through a number of mechanisms.
Constructing a ship cannon in 1908 The construction of a large cannon on a ship to England, during the great naval equipment competition before World War II.
Engineer builds the first “tank” of Somalia The 27 year old engineer Somali Abdullahi Mohamed Ali became famous in his country, when it built almost by hand a small chariot.
The construction of the Titanic for the filming of the 1997 movie In a timelapse video, We see the construction of the impressive backdrop for the film "Titanic" 1997 by director James Cameron. For the construction of the ship replica took 500 workers and 100 days of work.
Constructing a handcrafted well A young man from the Primitive Evolution channel on youtube, manufactures a handcrafted well with materials from the forest.
The construction of a cruise ship in timelapse The construction of the cruise ship company's AIDAprima AIDA Cruises, in a nice timelapse from Nagasaki shipyards in Japan. The ship can carry 3300 passengers and 900 crew members. Its length is nearly 304 meters, and its cost amounted to $ 645 million.
Mercenaries against Somali pirates Exchange of fire between Somali pirates and private cargo ship safety makes the final hours of the internet round. It is believed that the incident occurred in the Indian Ocean in 2012 while the video went up on 20/04. In this we see when a speed boat approaching the ship and then one of the men of private security shooting so as to prevent it from getting closer. Then appears and second speedboat. You say to be there and Costas the Mercenary of Survivor;