Why is the Sky Blue? The Science Behind It #sciencefacts
The sky appears blue because of the scattering of sunlight by the Earth's atmosphere. Sunlight is composed of many different colors of light, each with its own wavelength. When sunlight enters the Earth's atmosphere, the shorter blue wavelengths are scattered more than the other colors by the molecules in the air, such as oxygen and nitrogen. This scattering causes the blue light to be scattered in all directions and makes the sky appear blue to an observer on the ground. At sunrise or sunset, when the sunlight must travel through more of the Earth's atmosphere to reach the observer, the longer red and orange wavelengths are less scattered, giving the sky a reddish or orange tint. #press21 #history #science ... https://www.youtube.com/watch?v=qjmh9big42w
Adolf Hitler Speech from 1935 in Color
Upscaling to 4k with Ai technology is the core of colorization, and restoration of old videos into the modern age.
#ww2 #hitler
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The Iranian Army has unveiled its first underground Air Force base, called “Oqab 44” (Eagle 44), which is capable of storing and operating various types of fighter jets, bombers and unmanned aerial vehicles (UAVs).
Chairman of the Chiefs of Staff of the Iranian Armed Forces Major General Mohammad Baqeri and Major General Abdolrahim Mousavi, the chief commander of the Iranian Army, visited the underground base on Tuesday.
"Any attack on Iran from our enemies, including Israel, will be met with a response from our many Air Force bases including Eagle 44," Baqeri said.
Dug deep into the mountains, the tactical airbase has various sections, including an alert area, command post, warplane hangars, repair and maintenance center, navigation and airport equipment, and fuel tanks. It is designed to accommodate and prepare a variety of fighter jets, bombers and unmanned aerial vehicles for missions.
#iran
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https://www.youtube.com/watch?v=rIliFKlRx_c
North Korea marked the 75th founding anniversary of its army with a parade featuring the newest hardware in Kim Jong-un’s growing arsenal, including what experts said was possibly a new solid-fuel intercontinental ballistic missile.
Kim's daughter's appearance at the event has once again fueled speculation that she’s being primed as a future leader of the country.
#northkorea
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https://www.youtube.com/watch?v=rPu8gWUpAbg
US and French troops serving in a NATO battlegroup in Romania conducted a military exercise at the Black Sea training range in Capu Midia, to test the alliance’s eastern flank defenses.
Dubbed Eagle Royal 23, the drills involved some 350 multinational troops, who practiced firing live ammunition from a US-made HIMARS.
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https://www.youtube.com/watch?v=aW21K_ILVtk
A Russian assault group engaged a Ukrainian fortification and an all-out battle ensued. This video shows the battle on the frontline near Avdeevka, in the Donetsk People’s Republic
#ukraine
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https://www.youtube.com/watch?v=4OBQeu_Fjd4
The Iranian Army and the Islamic Revolutionary Guard Corps take part in ‘Guardians of Velayat sky 1401’, a joint defense drill simulating an attack on the country’s nuclear and military sites
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https://www.youtube.com/watch?v=bpuoaV82E8Y
Iran has marked its national Army Day, with forces from all units of armed forces holding parades in major cities, including the capital Tehran.
Combat units of the army, helicopters, fighter jets, air defense systems and portable naval equipment took part in the parades. Also indigenously-developed military equipment, including drones and missiles were displayed.
Addressing the event, President Ebrahim Raeisi hailed the achievements made by Iran’s armed forces, saying any threat to Iran’s security will get quick and powerful response.
#iran
#military
#press21
#national
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https://www.youtube.com/watch?v=6Z_bri0SxWk