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Radar beacon. Racon signal as seen on a radar screen. This beacon receives using sidelobe suppression and transmits the letter "Q" in Morse code near Boston Harbor (Nahant) 17 January 1985. Radar beacon (short: racon) is – according to article 1.103 of the International Telecommunication Union's (ITU) ITU Radio Regulations (RR) [1 ...
The U.S. suspended some new avocado shipments from Mexico after an incident that reportedly threatened the safety of American agricultural inspectors. The U.S. Department of Agriculture notified ...
An international reply coupon (IRC) is a coupon that can be exchanged for one or more postage stamps representing the minimum postage for an unregistered priority airmail letter of up to twenty grams sent to another Universal Postal Union (UPU) member country. IRCs are accepted by all UPU member countries. UPU member postal services are obliged ...
Buy one, get one free. " Buy one, get one free " or " two for the price of one " is a common form of sales promotion. Economist Alex Tabarrok has argued that the success of this promotion lies in the fact that consumers value the first unit significantly more than the second one. So compared to a seemingly equivalent "Half price off" promotion ...
Major record labels Sony Music, Universal Music Group and Warner Records sued artificial intelligence companies Suno and Udio on Monday, accusing them of committing mass copyright infringement by ...
May 22, 2024 at 8:56 AM. A video has emerged showing the interior of a Singapore Airlines Boeing jet in complete disarray after it was forced to make an emergency landing in Bangkok this week ...
The Shapiro time delay effect, or gravitational time delay effect, is one of the four classic Solar System tests of general relativity. Radar signals passing near a massive object take slightly longer to travel to a target and longer to return than they would if the mass of the object were not present. The time delay is caused by time dilation ...
In 2021, President Joe Biden set a goal set a goal of reducing aviation emissions 20% by 2030 as a step toward “net-zero emissions" by 2050. Those targets are seen as highly ambitious — and ...