Add new comment


Hi I am 14 years old but I have a strong desire to become a physicist and I have so far taught my self up to general relativity.I just wanted to say this article has helped to to know even more.

Filtered HTML

  • Web page addresses and email addresses turn into links automatically.
  • Allowed HTML tags: <a href hreflang> <em> <strong> <cite> <code> <ul type> <ol start type> <li> <dl> <dt> <dd>
  • Lines and paragraphs break automatically.