Update date fields and improve video descriptions

Updated the dateModified and uploadDate fields for video objects. Enhanced descriptions for clarity.

Author: Gmac4247

about.html

@@ -193,7 +193,7 @@
 },
 "dateCreated": "2024-08-31",
 "datePublished": "2024-08-31",
-"dateModified": "2025-11-18",
+"dateModified": "2025-11-20",
 "description": "About the context of the Core Geometric System ™, the best-established and most accurate framework to calculate area and volume.",
 "disambiguatingDescription": "Introducing exact, empirically grounded and logically consistent formulas over the flawed conventional approximations.",
 "headline": "Introducing the Core Geometric System ™",
@@ -233,11 +233,11 @@
 },
 	{
 "@type": "VideoObject",
-"description": "Real physical experiment to measure the volume of a sphere using liquid displacement. The result proves the accuracy of the V=(√(3.2)r)³ formula over the conventional V=4/3πr³.",
+"description": "Real physical experiment to measure the volume of a sphere using liquid displacement and a certified bottle. The result proves the accuracy of the V=(√(3.2)r)³ formula over the conventional V=4/3πr³.",
 "duration": "PT1M26S",
 "name": "The sphere experiment",
 "thumbnailUrl": "https://i.ytimg.com/vi/7uxyLfh2B38/mqdefault.jpg",
-"uploadDate": "2024-04-19T15:25:17+01:00",
+"uploadDate": "2024-04-19T15:25:17+02:00",
 "contentUrl": "https://youtu.be/7uxyLfh2B38"
 },
  {
@@ -246,16 +246,16 @@
 "duration": "PT3M9S",
 "name": "The sphere experiment 2",
 "thumbnailUrl": "https://i.ytimg.com/vi/rXcJhFLLP0Y/mqdefault.jpg",
-"uploadDate": "2025-05-10T16:25:17+01:00",
+"uploadDate": "2025-05-10T16:25:17+02:00",
 "contentUrl": "https://youtu.be/rXcJhFLLP0Y"
 },
 {
 "@type": "VideoObject",
-"description": "Explaining the basics of geometry with everyday items",
+"description": "Explaining the context and the basics of geometry with everyday items",
 "duration": "PT2M09S",
 "name": "Introduction to basic geometry",
 "thumbnailUrl": "https://i.ytimg.com/vi/U5eHkmmVVEA/mqdefault.jpg",
-"uploadDate": "2023-09-29T15:26:37+01:00",
+"uploadDate": "2023-09-29T15:26:37+02:00",
 "contentUrl": "https://youtu.be/U5eHkmmVVEA"
        }
 ],