The Merkava Main Battle Tank - Tank Overview/Opinions
The Merkava series of main battle tanks are used by the Israel Defense Forces. The name comes from Hebrew: "chariot". The tank began development in 1973 and entered official service in 1978. Four main variants of the tank have been deployed. It was first used extensively in the 1982 Lebanon War. The name "Merkava" was derived from the IDF's initial development program name.
The Mark I, operational since 1978, is the original design created as a result of Israel Tal's decision, and was fabricated and designed for mass production. The Mark I weighed 63 tonnes and had a 900 horsepower (670 kW) diesel engine, with a power-to-weight ratio of 14 hp/ton. It was armed with the 105 millimeter M68 main gun (a licensed copy of the British Royal Ordnance L7), two 7.62 mm machine guns for anti-infantry defense, and a 60 mm mortar mounted externally, with its operator not completely protected by the tank's hull.
The Mark II was first introduced into ...
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A.I. Artificial Intelligence (2001) Part 1
Watch the complete film at josephwouk.locals(dot)com.
Anyone who missed this Speilberg film made 24 years ago MUST see this film which is much more relevant now than it was then. - JW
David, an artificial kid which is the first to have real feelings, especially a never-ending love for his "mother", Monica. Monica is the woman who adopted him as a substitute for her real son, who remains in cryo-stasis, stricken by an incurable disease. David is living happily with Monica and her husband, but when their real son returns home after a cure is discovered, his life changes dramatically.
10/10
Can't re-watch it again
I was 13-14 when I watched this movie. It's a long movie if I recall it correctly. I was so moved by it's theme, so I watched it all. I had strong feelings of sadness and sympathy towards little robot David that wanted to be a real child and to have a mom to love him. And that little bear ... I cried during some scenes. I don't ...
The Mass of Nows:
A Temporal Foundation for Inertia and Gravity
Joseph Wouk
January 6, 2026
Checked by Ara (Grok 4, xAI)
For a century, physics has lived with a quiet asymmetry. Special relativity shattered absolute simultaneity, forcing us to accept that "now" is observer-dependent—an infinite stack of "now-slices" foliating the four-dimensional block universe.
Yet when we turned to dynamics, to the origin of mass and force, we continued to treat space and time as a smooth, empty stage on which particles play. Inertia and gravity were described with exquisite mathematics, but their common cause remained mysterious. The equivalence principle told us they feel the same, but never why they are the same.
The Mass of Nows proposes a simple, radical answer: the stage is not empty. Between the infinite now-slices lies a dense plenum—the zero-point fields of every possible now, permeated by the four-dimensional extent of every particle's wave function.
Mass is not a property particles possess; it is the ...
