International Day of Planetariums, formerly known as International Day of Planetaria, is celebrated annually on the second Sunday of March. It was inaugurated by the Italian Association of Planetaria (IAP), and is sponsored by the International Planetarium Society.
A planetarium is a type of theater build primarily for presenting educational and entertaining shows about the night sky and astronomy in general. Most planetariums have a large dome-shaped projection screen, onto which scenes of celestial objects are projected using a special technology. These scenes are usually accompanied by lectures or music.
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The world’s first optical planetarium projector was made at the Carl Zeiss workshop in Jena in the early 1920s. It was exhibited at the Deutsches Museum in Munich. After World War II, other companies began to produce projectors for planetariums. They included Armand Spritz (United States), GoTo (Japan), Minolta (Japan), Ohira Tech Ltd. (Japan), and Evans & Sutherland (United States).
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Today, most planetariums use digital projectors (interestingly, the IMAX system was originally conceived to operate on planetarium screens). Thanks to this technology, planetariums can demonstrate impressive fulldome shows in addition to traditional celestial scenes. Besides, the use of digital projectors has contributed to the emergence of portable planetariums that can be used in schools and universities, at exhibitions and other events.
The inaugural Day of Planetariums was organised in 1991 by the Italian Association of Planetaria. The initiative was supported by the International Planetarium Society (ISA) that unites planetariums, planetarium associations and planetarium professionals from 35 countries. In 1995, the Day of Planetariums went global for the first time.
Today, it is celebrated by regional and national planetarium associations in Europe, the Americas, Asia, and Australia. The observance was originally held on the Sunday before the Vernal Equinox, but now it is celebrated on the second Sunday of March.
The main goals of the International Day of Planetariums are to encourage collaboration within the international planetarium community and to popularise planetariums among the general public. According to the IPS official website, planetariums play an extremely important role in the present-day light-polluted world, where only a few stars can be see over large cities. Planetariums help people reconnect with the stars and learn more about them.
On the occasion of the International Day of Planetariums planetariums around the world host various events, such as lectures and exhibitions with discounted or free entry, so that as many people as possible can attend. Some planetariums host an entire week of events, which begins on the International Day of Planetariums or, on the contrary, ends with it. Planetariums that are closed on Sundays usually host events on the preceding Saturday.
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WhatsApp : Illegal Effect : Hacking is growing at High Risk in future
(1) WhatsApp does not store messages on its servers, so if cybercriminals were to hack into the platform, they would not be able to decrypt any of the messages.
Telegram is a cloud service. We store messages, photos, videos and documents from your cloud chats on our servers so that you can access your data from any of your devices anytime without having to rely on third-party backups. This way local engineers or physical intruders cannot get access to user data.
(2) (a) Additionally, WhatsApp does not have the key to see encrypted messages. By default, WhatsApp stores messages in a way that allows them to be backed up to the cloud by iOS or Android. WhatsApp store in phone storage device occupies more space.
(2) (b) WhatsApp files (photos, audios, videos, documents) and texts occupying too much phone storage device. Read more…Click here to open link.
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Telegram provides unlimited cloud storage. This means all your text messages, images media files & documents will be saved on their cloud without losing any data, you don’t need to worry about backup & restore.
(3) WhatsApp: Uncrackable problem of end-to-end encryption: Lack of Security
Telegram Secret Chats are one-on-one chats wherein messages are encrypted with a key held only by the chat’s participants. Note that the schema for these end-to-end encrypted Secret Chats is different from what is used for cloud chats.
(4) WhatsApp Draining Your Phone’s Battery Too? This Could Be The Reason. Read more…Click here to open link.
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(5) WhatsApp warning: How a single phone call hacked phones worldwide. Read more…Click here to open link.
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(6) WhatsApp virus is a term used for a variety of malware and scams directed towards this popular communications app. Read more…Click here to open link.
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(7) New Warning for WhatsApp Users Over Account Suspension ‘Hack’. Read more…Click here to open link.
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(15) WhatsApp joinable calls feature can increase risk of eavesdropping through cyberattack: Kaspersky. Read more…Click here to open link.
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(16) WhatsApp hijack scam continues to spread. Read more…Click here to open link.
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(17) 8 Ways Your WhatsApp Messages Can Be Hacked. Read more…Click here to open link.
https://www.makeuseof.com/tag/how-whatsapp-messages-can-hacked/ to view webpage with the browser.
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NOTE: Microsoft Kaizala has retired on 31st August 2023. Kaizala moved to Microsoft Teams from 1st September 2023.
NOTE: Microsoft Kaizala has retired on 31st August 2023. Kaizala moved to Microsoft Teams from 1st September 2023.
NOTE: Microsoft Kaizala has retired on 31st August 2023. Kaizala moved to Microsoft Teams from 1st September 2023.
Telegram provides unlimited cloud storage. This means all your text messages, images media files & documents will be saved on their cloud without losing any data, you don’t need to worry about backup & restore. Telegram Private Groups cannot be found with an in-app search. The group is private, after all that you can use the 2,00,000 member limit fully. Telegram Channels are a tool for broadcasting public (or) private messages to large audiences, similarly as you do on Twitter or Facebook Page. In fact, channels can have an unlimited number of subscribers. Telegram Private Channels cannot be found with an in-app search. Group video calls on Telegram allow 30 users to broadcast from their camera as well as their screens. This can now be watched by 1,000 people at once (updated by 1st August 2021). Users can hold anything event online, from lectures to concerts and everything in between, similarly as Zoom or Microsoft Teams or Google Meet.
A. Simple: Telegram is so simple you already know how to use it.
B. Private: Telegram messages are heavily encrypted and can self-destruct.
C. Synced: Telegram lets you access your chats from multiple devices.
D. Fast: Telegram delivers messages faster than any other application such WhatsApp, Signal etc.
E. Powerful: Telegram has no limits on the size of your media and chats.
F. Open: Telegram has an open API and source code free for everyone.
G. Secure: Telegram keeps your messages safe from hacker attacks.
H. Expressive: Telegram lets you completely customise your messenger.
Telegram: Interest in Money Transfer Features % active users on BBM, WeChat, Kakao, LINE, Viber, Skype, WhatsApp, Kik, Snapchat and Facebook Messenger.
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