Valid HTML 2.0!

Most pages on the World Wide Web are written in computer languages (such as HTML) that allow Web authors to structure text, add multimedia content, and specify what appearance, or style, the result should have.

As for every language, these have their own grammar, vocabulary and syntax, and every document written with these computer languages are supposed to follow these rules. The (X)HTML languages, for all versions up to XHTML 1.1, are using machine-readable grammars called DTDs, a mechanism inherited from SGML.

However, Just as texts in a natural language can include spelling or grammar errors, documents using Markup languages may (for various reasons) not be following these rules. The process of verifying whether a document actually follows the rules for the language(s) it uses is called validation, and the tool used for that is a validator. A document that passes this process with success is called valid.


kimbersoft.com    Study   IQ   AIWorkshopabout Multiple SclerosisLove and the Soul

Zoom Search
Linkman

Study7LiberalArtsLibraryWWWTechnologiesTechnical Fast Track

7LiberalArtsGrammarLogicRhetoricGeometryArithmeticAstronomyMusic

Eratosthene.png

astronomy.com
from Wikipedia
Astronomy, a natural science, is the study of celestial objects
(such as stars, galaxies, planets, moons, asteroids, comets and nebulae) and processes (such as supernovae explosions, gamma ray bursts, and cosmic microwave background radiation), the physics, chemistry, and evolution of such objects and processes, and more generally all phenomena that originate outside the atmosphere of Earth. A related but distinct subject, physical cosmology, is concerned with studying the Universe as a whole.

Astronomy is one of the oldest sciences. The early civilizations in recorded history, such as the Babylonians, Greeks, Indians, Egyptians, Nubians, Iranians, Chinese, and Maya performed methodical observations of the night sky.

However, the invention of the telescope was required before astronomy was able to develop into a modern science. Historically, astronomy has included disciplines as diverse as astrometry, celestial navigation, observational astronomy and the making of calendars, but professional astronomy is nowadays often considered to be synonymous with astrophysics.

During the 20th century, the field of professional astronomy split into observational and theoretical branches. Observational astronomy is focused on acquiring data from observations of astronomical objects, which is then analyzed using basic principles of physics. Theoretical astronomy is oriented toward the development of computer or analytical models to describe astronomical objects and phenomena.

The two fields complement each other, with theoretical astronomy seeking to explain the observational results and observations being used to confirm theoretical results. Astronomy is one of the few sciences where amateurs can still play an active role, especially in the discovery and observation of transient phenomena.

Amateur astronomers have made and contributed to many important astronomical discoveries.

Today IS the very first day of the rest of your life.

Yesterday IS History

Tomorrow IS a Mystery

Today IS a Gift

That is why we call it the Present

Site developed on: 2020 HP 17.3" Laptop Computer/ 8th Gen Intel Quad-Core i5-8265U Up to 3.9GHz/ 8GB DDR4 RAM/ 256GB PCIe SSD/ DVD/ Bluetooth 4.2/ USB 3.1/ HDMI/ Windows 10 Home/ Black

This page was last updated July 30th, 2020 by Kim.S
Where wealth like fruit on precipices grew

kimbersoft.com is Hosted by namecheap.com