«PHOTOPHONE» এর সঙ্গে সম্পর্কিত ইংরেজী বই
নিম্নলিখিত গ্রন্থপঞ্জী নির্বাচনে
photophone শব্দটির ব্যবহার খুঁজুন। ইংরেজী সাহিত্যে
photophone শব্দের ব্যবহারের প্রসঙ্গ সম্পর্কিত বই এবং তার থেকে সংক্ষিপ্তসার।
27.1 The diagram of the Photophone; this has been taken from Alexander
Graham Bell's 1880 paper "On the Production and Reproduction of Sound by
Light", American Journal of Sciences, Third Series, vol. XX, #118, pp. 305 - 324,
October ...
... and stored on 3.5-in. i floppy diskette. I — I Image printed on laser printer.
Image Data's Photophone supports most E-mail and desktop publishing
packages, enabling users to integrate images with text over a network connection
.
3
Television: An International History of the Formative Years
Although Bell was the first person to construct a photophone in 1880, the concept
dates from June 1878. In that month a letter30 appeared in the journal Nature,
signed by aJ F W, stating that the writer had looked in vain for any account 'of ...
For example, an unsigned editorial in the New York Times on August 30, 1880
allowed that while members of the AAAS might understand the photophone's
operation, "The ordinary man . . . may find a little difficulty in comprehending how
...
5
Optical Networking Best Practices Handbook
He named his experimental device the photophone. In other words, the
photophone used free-space light to carry the human voice 200 meters.
Specifically placed mirrors reflected sunlight onto a diaphragm attached within
the mouthpiece of ...
6
Alexander Graham Bell: Giving Voice to the World
By late 1879, Alexander and Mabel were living in Washington, D.C. It was there
that Bell started working on the photophone with a young man named Sumner
Tainter. Together, they built their light-powered phone using mirrors, lenses, and
an ...
7
God's Instrument of His Imagination
That was the Photophone!! On June 3, 1880, Alexander Graham Bell transmitted
the first wireless telephone message on his newly invented "photophone." Bell
believed the photophone was his most important invention. The device allowed
for ...
8
Fiber Optics Illustrated Dictionary
In December 1880, Bell and Tainter received the first patent on the Photophone (
U.S. #235,496). For a while the invention was known as a radiophone. In 1937,
the packet delivered to the Smithsonian was opened, revealing the Photophone ...
Hence, ultra-violet light recording used by RCA Photophone marks a great
advance in motion picture sound. In spite of the amazing perfection of today's
Photophone sound, search for better methods goes on unceasingly in RCA
Laboratories.
10
Hollywood on the Hudson: Film and Television in New York ...
Ownership of the new organization was divided on a 50–30–20 basis among
RCA, GE, and Westing- house.109 Unlike De Forest's Phonofilm operation, RCA
Photophone was very well capitalized and could take full advantage of its ...
10 «PHOTOPHONE» শব্দটি আছে এমন সব সংবাদ
জাতীয় ও আন্তর্জাতিক সংবাদের ক্ষেত্রে
photophone শব্দটি নিয়ে কি বলা হয়েছে এবং নিম্নলিখিত সংবাদে কোন প্রসঙ্গে
photophone শব্দটি ব্যবহার করা হয়েছে।
Book reviews: Life's Engines and A New History of Life
Bell used the photophone to transmit a wireless voice telephone message 700 feet, and considered it to be his greatest invention. And perhaps ... «The Australian Financial Review, জুলাই 15»
The New D.C. Mayor Muriel Bowser Meme: CONDOS!
... homeless shelter, the headquarters to the D.C. Public School administration, and was the site of Alexander Graham Bell's photophone tests. «Curbed DC, মে 15»
D.C. to tempt foreign investors with Franklin School opportunity
... it has served as a school, as home to the D.C. Public School administration, as the site of Alexander Graham Bell's "photophone" tests, and, ... «Washington Business Journal, মার্চ 15»
Franklin School competition reopened as D.C. formally cancels …
In its 145 years, it has served as a school, as home to D.C. Public School administration, as the site of Alexander Graham Bell's "photophone" ... «Washington Business Journal, ফেব. 15»
Alexander Graham Bell: 5 Facts on the Father of the Telephone
After the telephone, Bell went on to develop an array of interesting inventions. Bell created the photophone, which used light to transmit sound. «Biography, জানুয়ারি 15»
Remembering telephone pioneer Alexander Graham Bell
Bell laid the foundation for wireless telephone communication with the invention of the Photophone, which he co-invented with his assistant ... «Mid-Day, জানুয়ারি 15»
Cape Breton celebrates Celtic music
... dreamed up inventions more suited to the 21st century than the 19th: a photophone that sent messages on a ray of sunlight, massive manned ... «Pittsburgh Post Gazette, অক্টোবর 14»
Historic Star Court Theatre closes doors for "rejuvenation"
With the arrival of sound in 1929, the theatre announced an upgrade to be equipped with RCA Photophone and the entire theatre was ... «Northern Star, সেপ্টেম্বর 14»
Let there be Li-Fi: Meet the man who's bringing connectivity to the …
Among these were the photophone, a wireless telephone of sorts that enabled sounds (including speech) to be transmitted via light. It's said ... «The Next Web, আগস্ট 14»
New book on Aberdour's links with WW1 research station
... from one of the key researchers, and also a working demonstration of a photophone similar to the one that was developed at the naval station ... «Fife Today, আগস্ট 14»
এর মাধ্যমে তা খুঁজে বের করুন 
