tellmarcosIn the age of rapid technological advancement, the concept of a quantum internet has captured the imagination of scientists and researchers worldwide. Unlike the classical internet we use today, a quantum internet promises to revolutionize communication by harnessing the strange and counterintuitive properties of quantum mechanics. In this article, we'll delve into the fascinating world of the quantum internet, exploring its potential applications, challenges, and the current state of research. tellhappystar tellgamestopWhat is the Quantum Internet? tellgamestop telldunkin.clickTo understand the quantum internet, we must first grasp the fundamental principles of quantum mechanics. Quantum mechanics describes the behavior of matter and energy at the smallest scales, where classical physics no longer applies. Key features of quantum mechanics include superposition and entanglement, which form the foundation of quantum communication. tellculvers tellcitybbqSuperposition: In quantum mechanics, particles can exist in multiple states simultaneously. This property allows quantum bits or qubits to represent both 0 and 1 at the same time, significantly increasing computational power. tellcaribou tellbrueggersEntanglement: When two quantum particles become entangled, their properties become correlated in such a way that the state of one particle instantaneously affects the state of the other, regardless of the distance separating them. This property is at the heart of quantum teleportation and quantum cryptography. tellbostonmarket The Quantum Internet's Potential Applications: Ultra-Secure Communication: One of the most promising applications of the quantum internet is quantum cryptography, which enables perfectly secure communication. Any attempt to eavesdrop on quantum-encrypted messages would disrupt the entangled particles, alerting both the sender and receiver to the intrusion. Quantum Teleportation: Although it won't lead to instantaneous transportation as seen in science fiction, quantum teleportation allows the transfer of quantum states between distant locations, making it a crucial tool for quantum computing and communication. Quantum Computing: The quantum internet will pave the way for quantum computing, which has the potential to solve complex problems exponentially faster than classical computers. This could revolutionize fields like drug discovery, cryptography, and optimization. Challenges and Current Research: Building a quantum internet is no easy task and is fraught with challenges. Some of the key hurdles include: Quantum Decoherence: Quantum systems are extremely delicate and susceptible to external interference, leading to decoherence, which disrupts quantum states. Researchers are working on developing error-correction techniques to mitigate this issue. Quantum Repeaters: As entangled particles lose their coherence over distance, the development of quantum repeaters is crucial to extend the range of quantum communication. This involves creating intermediate nodes that re-establish entanglement between distant qubits. Practical Implementation: Transforming theoretical concepts into practical, scalable technologies is a significant challenge. Researchers are exploring various physical systems, such as trapped ions, superconducting circuits, and photon-based approaches, to create viable quantum communication devices. The quantum internet holds immense promise for the future of communication and computing. While many challenges remain to be overcome, researchers are making rapid progress in developing the necessary technologies. As the quantum internet inches closer to reality, it has the potential to transform industries, enhance security, and unlock new frontiers in science and technology, ushering in an era of truly quantum communication.

Internet Listing and Selling Guidelines – Internet Philatelic Dealers Association Inc

Internet Philatelic Dealers Association Inc


Internet Listings & Selling Guidelines

Online stamp dealing with ethical standards, valuable resources, and a supportive community for a safer and more enjoyable philatelic experience. ​

Internet Philatelic Dealers Association
  • Image Size – we recommend a minimum of 600dpi
  • Provide both Front and Back images, where appropriate
  • Image Clarity – images scanned on a black or dark background, or as best to show the stamp
  • Full and Correct image – not showing any marks from scanning, that are not really on the stamp
  • Color – to be a correct representation of the actual stamp and not be enhanced, brightened or otherwise to not be the exact true colour of the stamp
  • Images – show all stamps being sold, with no stamps overlapping, so buyer can see the quality of each stamp – split into multiple images if necessary
  • One stamp, one image – 5 copies of the same stamp require 5 images (with special exceptions only). The pictured stamp is the one you will receive.
  • It is NOT acceptable to state “we don’t have time to show an image”
  • Use meaningful wording
  • Do NOT use exaggeration words, like BEAUTY, BELLA, BELLE, SCHÖN WITH BEAUTIFUL GUM, etc.
  • No exaggeration for rarity – emphasis of some aspect of the stamp quality for example is acceptable, but exaggeration is not.
  • Complete description in the summary and the further details sections
  • Where required, state perforation variety or other special catalogue aspects which, in addition to correct catalogue reference, demonstrates credibility to a buyer
  • Faults to be fully stated, it is not acceptable to state the image describes the stamp, or some such words
  • State missing perfs, if in doubt
  • Rusting/Toning to be stated, if applicable
  • When it is known to be a CTO cancel, then it should be described as CTO, NOT stating or implying “Used”
  • State “with gum” or “without gum”, if needed for completeness (i.e., especially if the catalog description mentions that quality
  • Chemically removed from paper and/or damaged must be stated for modern self-adhesives
  • Additional description details must NOT be “buyer beware” statements
  • Use generally accepted Scott or SG or country specific, eg Michel, catalogue standard codes, and/or include explanations or a glossary wherever possible
  • Quality or condition codes need to be correct and meaningful for the stamp(s) being listed, as per generally  accepted standards as listed in for example, both Scott and SG catalogues
  • acronyms should be explained if they are not the generally accepted standard codes so that customers are not confused by the meaning of the acronym.
  • Use only official Grading certificates (not self-made ones)
  • State catalogue year, if pricing is based on a percent of catalogue
  • Do NOT use inflated prices with exaggerated percent reductions – doubling or tripling the catalogue price with bold statements offering 60% or 80% discounts may be seen as misleading and/or misrepresentation (which they are!) and it is unethical. 
  • Shipping is also recognized as meaning postage, packaging and handling charges, and as such should not be excessive, to more than cover reasonable related costs (i.e.  sellers should NOT use this to inflate the selling price)
  • No fake or illegal stamps should be listed, unless correctly and fully described as such
  • It is a courtesy to politely communicate with a buyer, acknowledging receipt of the order and advising the buyer that the order has been shipped. Sellers should act in a professional and courteous manner.
  • Messages from a buyer to a seller should be answered in a polite and timely manner; they should NOT be ignored!
  • It is a courtesy to provide feedback on receipt of payment from the buyer. Making statements to the effect that feedback will only be provided after the buyer has provided feedback is not considered a polite or courteous way of conducting business.  Sellers should always act in a professional and courteous manner.