15 bí mật thú vị về tháp Eiffel
Vào ban đêm, cứ 5 phút, khoảng 20.000 ngọn đèn và 336 máy chiếu hoạt động, tạo nên vẻ đẹp tráng lệ cho tháp Eiffel - biểu tượng của "kinh đô ánh sáng" Paris.
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Hiển thị các bài đăng có nhãn ảnh. Hiển thị tất cả bài đăng
Hiển thị các bài đăng có nhãn ảnh. Hiển thị tất cả bài đăng
Thứ Tư, 9 tháng 7, 2014
15 bí mật thú vị về tháp Eiffel
Thứ Năm, 5 tháng 6, 2014
Ảnh 2 khung xanh - nâu góc cong đơn 702x40 và 702x16
Thứ Ba, 3 tháng 6, 2014
Thứ Bảy, 31 tháng 5, 2014
Bye bye... Shuttle Endeavour !
-----Original Message-----
From: nghiadq@yahoo.com
Sent: Sat, 29 Sep 2012 11:06:13 -0700 (PDT)
To:
Subject: Bye bye... Shuttle Endeavour !
From: nghiadq@yahoo.com
Sent: Sat, 29 Sep 2012 11:06:13 -0700 (PDT)
To:
Subject: Bye bye... Shuttle Endeavour !
Hình ảnh đẹp cuối cùng chấm dứt nhiệm vụ tàu Con Thoi Vũ Trụ
Shuttle Endeavour’s final voyage
n.ny

Edward Air Force Base, in California Mojave Desert


Passes over the California State Capitol in Sacramento



Passes over Los Angeles City Hall

Passes over Santa Monica beach








Flies over Angel Stadium of Anaheim
Flies over Los Angeles Coliseum

At LAX




Shuttle Endeavour’s final voyage
n.ny
The space shuttle Endeavour, atop Nasa’s Shuttle Carrier Aircraft, flies over Houston, Texas on Wednesday SEP 19, 2012. The SCA, a modified 747 jetliner is flying Endeavour to Los Angeles where it will be placed on public display at the California Science Centre. This is the final ferry flight scheduled in the Space Shuttle Program era.

Edward Air Force Base, in California Mojave Desert


Passes over the California State Capitol in Sacramento

















At LAX





Thăm một tàu ngầm hiện đại của Hoa Kỳ (trị giá 2,4 tỷ USD)
The submarines are nearly 400 feet long and have been in service since 2003The ships were designed to function well in both deep sea and low-depth watersSo far, nine have entered service — here is Cheryl McGuiness, the widow of one of the pilots killed on 9/11, christening the USS New HampshireHere are the USS Virginia's engines, which powers a pump-jet propulsor rather than a conventional propellerThis design cuts back on corrosive damage and also makes the ship stealthierThe engine room, near the sub's stern, is the place where power from the SG9 nuclear reactor core drives the ship to nearly 32 mph when it's submergedThis hallway — extending from the engine room, over the reactor and through the living habitat in the center of the ship — is dark so that sailors can sleepThe ship has an airlock chamber with room for 9 SEALsThe SEALs can exit the sub while its underwater by passing through this airlockThis lock-out chamber is in the center of the shipSubmariners eat well — the quality of the food is designed to offset the stress and burden of living underwater for months at a timeAs one sailor said, "It's like having comfort food 24-hours a dayGoing further toward the bow of the sub, the command center is directly beneath the main sail of the sub and where the navigators do their workThe command center on the Virginia subs are much more spacious compared previous submarinesThe command center doesn't have to be directly under the deck of the ship in the Virginia-class subs because there isn't a periscope.The monitor the Commander is looking at is this is the sub's "periscope" — a state-of-the-art photonics system, which enables real time imaging that more than one person can see at a timeThe Virginia eliminates the traditional helmsman, planesman, chief of the watch and diving officer by combining them into two stations manned by two officersThe subs are equipped with a spherical sonar array that scans a full 360-degreesThe Virginia subs carry a full crew of 134 sailorsDespite computer navigation systems all routes are plotted manually as wellDown below the command center is the torpedo room, where it is possible to set up temporary bunks for special operations teamThe ships carry up to 12 vertical launch tomahawk missiles and 38 torpedoesHere an officer on the USS Texas fires water through the torpedo tubes as part of a testThe subs were designed to host the defunct Advanced SEAL Delivery system, a midget submarine that transported the Navy SEALs from the sub to their missionThe only thing in front of the torpedo room is the bow of the submarine, which contains sonar equipment and shielding designed to make the sub stealthierEven as they are being built, new improvements and upgrades are being added into the design of the submarinesRead more: http://www.businessinsider.com/here-is-why-the-navy-is-betting-it-all-on-the-high-tech-virginia-class-submarine-2012-7?op=1#ixzz26ysk1XxD
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