phet.colorado.edu
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2606:4700:3035::6815:49b0
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Submitted URL: http://phet.colorado.edu/
Effective URL: https://phet.colorado.edu/
Submission: On November 20 via manual from JP — Scanned from JP
Effective URL: https://phet.colorado.edu/
Submission: On November 20 via manual from JP — Scanned from JP
DOM tree The "DOM" is the Document Object Model