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<blockquote style="position: relative; padding-left: 55px;"><section><a href="https://mastodon.social/users/coreyspowell/statuses/115080989119284017">Corey S Powell (coreyspowell@mastodon.social)'s status on Thursday, 28-Aug-2025 09:06:27 JST</a><a href="https://mastodon.social/@coreyspowell" title="coreyspowell@mastodon.social"><img src="https://gnusocial.jp/avatar/32826-48-20221119233213.webp" width="48" height="48" alt="Corey S Powell" style="position: absolute; left: 0; top: 0;">Corey S Powell</a><div><a href="https://mastodon.social/@coreyspowell/115080970510215621" rel="in-reply-to">in reply to</a></div></section><article><p>Transcript of the Herschel letter:</p></article><footer><a rel="bookmark" href="https://gnusocial.jp/conversation/5552386#notice-10900259">In conversation</a><time datetime="2025-08-28T09:06:27+09:00" title="Thursday, 28-Aug-2025 09:06:27 JST">about 6 months ago</time> <span>from <span><a href="https://mastodon.social/@coreyspowell/115080989119284017" rel="external" title="Sent from mastodon.social via ActivityPub">mastodon.social</a></span></span><a href="https://mastodon.social/@coreyspowell/115080989119284017">permalink</a><h4>Attachments</h4><ol><li><label><a rel="external" href="https://gnusocial.jp/attachment/5130315">Appendix to the Paper on the power of penetrating into Space by telescopes* After having shewn the extent of the power of my 40-foot telescope to penetrate into Space, I should have added page 84, that this instrument may be said to have also a power of penetrating into time: at least with respect to what is past. For by looking through it at one of the most distant nebula that was visible in it, we may be convinced, by actual inspection, that we see an object, which certainly was in the state we now perceive it, above nineteen hundred thousand years ago; and by viewing others less and less distant so have the same conviction of existing objects, in different periods, brought from that immense duration down to the present time.The proof of this rests upon the known velocity of light, by which we calculate that rays from the star Sirius for instance cannot be less than six years and nearly three months and a half coming to the earth; and that consequently, from such an object as we have pointed out in the paper referred to, a ray of light could not possibly have reached the telescope at the time we are looking into it, had it not begun its flight at least one million, and nine hundred &amp; ten thousand years ago.* See Phil Trans. for 1800 Page 49.</a></label><br><a href="https://files.mastodon.social/media_attachments/files/115/080/987/590/783/944/original/e741e7814a45582f.png" rel="external">https://files.mastodon.social/media_attachments/files/115/080/987/590/783/944/original/e741e7814a45582f.png</a></li></ol></footer></blockquote>

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Corey S Powell (coreyspowell@mastodon.social)'s status on Thursday, 28-Aug-2025 09:06:27 JST Corey S Powell
in reply to
Transcript of the Herschel letter:
In conversationabout 6 months ago from mastodon.socialpermalink
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1. Appendix to the Paper on the power of penetrating into Space by telescopes* After having shewn the extent of the power of my 40-foot telescope to penetrate into Space, I should have added page 84, that this instrument may be said to have also a power of penetrating into time: at least with respect to what is past. For by looking through it at one of the most distant nebula that was visible in it, we may be convinced, by actual inspection, that we see an object, which certainly was in the state we now perceive it, above nineteen hundred thousand years ago; and by viewing others less and less distant so have the same conviction of existing objects, in different periods, brought from that immense duration down to the present time. The proof of this rests upon the known velocity of light, by which we calculate that rays from the star Sirius for instance cannot be less than six years and nearly three months and a half coming to the earth; and that consequently, from such an object as we have pointed out in the paper referred to, a ray of light could not possibly have reached the telescope at the time we are looking into it, had it not begun its flight at least one million, and nine hundred & ten thousand years ago. * See Phil Trans. for 1800 Page 49.
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