A telephone is a telecommunications device that permits two or more users to conduct a conversation when they are too far apart to be heard directly. A telephone converts sound, typically and most efficiently the human voice, into electronic signals that are transmitted via cables and other communication channels to another telephone which reproduces the sound to the receiving user.
A common short form of the term is phone, which came into use almost immediately after the first patent was issued.
In 1876, Alexander Graham Bell was the first to be granted a United States patent for a device that produced clearly intelligible replication of the human voice at a second device. This instrument was further developed by many others, and became rapidly indispensable in business, government, and in households.
The essential elements of a telephone are a microphone (transmitter) to speak into and an earphone (receiver) which reproduces the voice in a distant location. In addition, most telephones contain a ringer to announce an incoming telephone call, and a dial or keypad to enter a telephone number when initiating a call to another telephone. The receiver and transmitter are usually built into a handset which is held up to the ear and mouth during conversation. The dial may be located either on the handset or on a base unit to which the handset is connected.
The transmitter converts the sound waves to electrical signals which are sent through a telephone network to the receiving telephone, which converts the signals into audible sound in the receiver or sometimes a loudspeaker. Telephones are duplex devices, meaning they permit transmission in both directions simultaneously.
The first telephones were directly connected to each other from one customer’s office or residence to another customer’s location. Being impractical beyond just a few customers, these systems were quickly replaced by manually operated centrally located switchboards. These exchanges were soon connected together, eventually forming an automated, worldwide public switched telephone network.
For greater mobility, various radio systems were developed for transmission between mobile stations on ships and automobiles in the mid-20th century. Hand-held mobile phones were introduced for personal service starting in 1973. In later decades, their analog cellular system evolved into digital networks with greater capability and lower cost.
Convergence has given most modern cell phones capabilities far beyond simple voice conversation. Most are smartphones, integrating all mobile communication and many computing needs.
Thanks to Wikipedia:
STOP WAR!!
Nothing to kill or die for
…
Imagine all the people
Livin’ life in peace
John Lennon -Imagine
KYIV, UKRAINE, YOU ARE NOT ALONE
Robert Jessup says on his blog:
“Street advertising, which has also come to be known as, or called ‘out of home’ (OOH) advertising, is a broad term used to describes any kind of marketing campaign that uses advertising techniques to reach consumers when they are outside, away from their home.
Street advertising can be accomplished virtually in any outdoor place, such as promotional paraphernalia at sporting events and musical concerts, billboards throughout cities, or simple signs outside on the street. Outdoor advertising can be compared to broadcasting methods, because both represent a type of mass-market medium, meaning that the intention of both are to reach a large, undifferentiated segment of the population (consumers) with indistinct and varied backgrounds.
Street advertising is best utilized through broad message advertising mediums, as well as branding and support campaigns”.
Why are blondes so attracted to me?
My theories:
- You may be very attractive to all sorts off people. It may be a coincidence that the people who happened to be blonde happened to be attracted to you.
- You just notice the blondes that are attracted to you. As Alice Tsymbarevich remarked it may be confirmation bias.
- You live in an area where most girls are blonde
- Some people tend to like people who is similar to them, are you blonde?
- You treat blondes better than people of other hair color (maybe because you find them more attractive) and they find you more attractive as kindness is a attractive attribute.
- Maybe the blondes have some other common trait except being blonde and liking you. For an example bleaching their hair and caring about appearance. Concluding you are a good looking person. (No offense to blondes, I’m blonde myself( I don’t bleach it though))
Sesilia Vestberg Quora
Twins
It is a pleasure to participate again in the Week Photo Challenge. The theme of this week is <a href="http://Focus“>Pure.
My contribution to the subject are these precious and sleeping twins. No one would doubt its purity, yet…
Imagination
Imagination, also called the faculty of imagining, is the creative ability to form images, ideas, and sensations in the mind without any immediate input of the senses (such as seeing or hearing). – Wikipedia.
Imagination is probably what most differentiates humans from other living beings. It is that wonderful ability to create new scenarios in our mind that do not really exist.
Our imagination combines desires, previous experiences, lived sensations, also our fears and hopes. The imagination transports us to new places that probably we would like them to exist.
We will only be aware of the importance of the imagination if we imagine that we did not have imagination. I firmly believe that if we did not have this incredible capacity, we would not be human, humanity would not exist.
Sweet
This is my contribution to this Weekly Photo Challenge, Sweet.
Although I should not like them as much as I like them, I must confess that I love them. Sweets attract many people because of their taste. I do not recommend sugar, but most sweets contain it in various amounts. I try to eat few and always the less sugar, the better.
For me, I admit, they are a temptation. I try not to buy and if I do, eat them in moderation. I do not always get it.
I photographed these beautiful and tasty cookies in a beautiful store in a large and luxurious department store in Berlin.
The ink sketches are handmade by me. I hope you like it.
Puigcerdà (Catalonia)
Silence
In Silence…
Absorb the silence around
Know the silence and it messages
Connect with the inner self
At rest is the soul and mind
Moments that reveals the truth
Silence douses the flames of uncertainty
Rendezvous with silence
As silence is there to be deciphered
Cemetery of Portbou
Silent
There is no more silent place.
Silence is everything there.
the end of a life of noise,
a noise many times unbearable.
Silence fills the atmosphere.
There is no more silent place.
Cemetery of Portbou
Cemetery on the shores of mediterranean sea, in the town of Portbou, in the north end of the Costa Brava, Noth Catalonia and today a border place between Catalonia and France.
Unknown Lady
The unknown lady
Her gaze captivated me instantly,
her blond hair moving gently in the wind,
her discreet smile, her beauty,
everything about her was intrigued.
From that moment my life is not mine…
My life is in her eyes…
Partners. “Castellers”
This is my contribution to this Week Photo Challenge: Partners
These are a group of “castellers”, that is, a group of people who build human “castles”. I think this perfectly reflects the concept of partners.
A castell (castle) is a human tower built traditionally in festivals at many locations within Catalonia. At these festivals, several colles castelleres (group of people who do these towers) often succeed in building and dismantling a tower’s structure. On November 16, 2010, castells were declared by UNESCO to be amongst the Masterpieces of the Oral and Intangible Heritage of Humanity.
Castellers
A castell is considered a success when stages of its assembling and disassembling, can be done in complete succession. The assembly is complete once all castellers have climbed into their designated places, and the enxaneta climbs into place at the top and raises one hand with four fingers erect, in a gesture said to symbolize the stripes of the Catalan flag. The enxaneta then climbs down the other side of the castell, after which the remaining levels of castellers descend in highest-to-lowest order until all have reached safety.
Castellers
Aside from the people who climb to form the upper parts of the tower, others are needed to form the pinya, or bottom base of the castell, to sustain its weight. Members of the pinya (most often men) also act as a ‘safety net’ if the tower structure collapses, cushioning the fall of people from the upper levels. It is not uncommon—when not in competitions—for other colles to assist in the pinya when a small colla is attempting a specially demanding structure in terms of people needed.
More info: Wikipedia
bCL Photography 