Sunday 19 August 1666

(Lord’s day). Up and to my chamber, and there began to draw out fair and methodically my accounts of Tangier, in order to shew them to the Lords. But by and by comes by agreement Mr. Reeves, and after him Mr. Spong, and all day with them, both before and after dinner, till ten o’clock at night, upon opticke enquiries, he bringing me a frame he closes on, to see how the rays of light do cut one another, and in a darke room with smoake, which is very pretty. He did also bring a lanthorne with pictures in glasse, to make strange things appear on a wall, very pretty. We did also at night see Jupiter and his girdle and satellites, very fine, with my twelve-foote glasse, but could not Saturne, he being very dark. Spong and I had also several fine discourses upon the globes this afternoon, particularly why the fixed stars do not rise and set at the same houre all the yeare long, which he could not demonstrate, nor I neither, the reason of. So, it being late, after supper they away home. But it vexed me to understand no more from Reeves and his glasses touching the nature and reason of the several refractions of the several figured glasses, he understanding the acting part, but not one bit the theory, nor can make any body understand it, which is a strange dullness, methinks. I did not hear anything yesterday or at all to confirm either Sir Thos. Allen’s news of the 10 or 12 ships taken, nor of the disorder at Amsterdam upon the news of the burning of the ships, that he [De Witt] should be fled to the Prince of Orange, it being generally believed that he was gone to France before.

19 Annotations

Terry Foreman   Link to this

"But it vexed me to understand no more from Reeves and his glasses touching the nature and reason of the several refractions of the several figured glasses, he understanding the acting part, but not one bit the theory, nor can make any body understand it, which is a strange dullness, methinks."

Why "a strange dullness"? I use a machine as I type, but know not how it works (what little HTML I know hardly suffices).

cgs   Link to this

Hollywood any one"...He did also bring a lanthorne with pictures in glasse, to make strange things appear on a wall, very pretty..."

cgs   Link to this

"...see Jupiter and his girdle and satellites, very fine, with my twelve-foote glasse..."
wiki
http://en.wikipedia.org/wiki/Jupiter

Nasa
http://www.nasa.gov/worldbook/jupiter_worldbook...

cgs   Link to this

from Nasa site above; for Samuall's moons?
"Jupiter's four largest satellites, in order of their distance from Jupiter, are Io, Europa, Ganymede, and Callisto. These four moons are called the Galilean satellites. The Italian astronomer Galileo discovered them in 1610 with one of the earliest telescopes. "

Larry Bunce   Link to this

"why the fixed stars do not rise and set at the same houre..." Evidently they did not yet understand that since the earth revolves around the sun, the rise and set of fixed stars would change by 1/365th of 24 hours each night. The stars are fixed in relation to the sun if we could observe from a platform stationary to the sun.

Paul Chapin   Link to this

Sam, just wait a few years, and a young guy named Isaac will explain the theory behind the refractions.

A sidelight on that, involving another character we've been hearing from a lot lately: "When Robert Hooke criticised some of Newton's ideas [on optics], Newton was so offended that he withdrew from public debate. The two men remained enemies until Hooke's death."
Wikipedia, http://en.wikipedia.org/wiki/Isaac_Newton#Optics

Mary   Link to this

the lantern with pictures in glass.

L&M quote a 1663 description of Reeves's picture box given by one Monconys.

"une lanterne sourde qui a un demi-globe tout entier de crystal, d'environ 3 poulces de diametre, & qui porte bien loin la representation des objects qu'il met entre la lumiere & ce crystal par le moyen d'une feuille de verre sur laquelle ces objets sont peints..."

i.e the dark lantern projects images that have been painted onto a sheet of glass. The painted glass is placed between the source of light and the half-sphere of crystal.

No explanation of the "frame with closes on" though.

Australian Susan   Link to this

"...He did also bring a lanthorne with pictures in glasse, to make strange things appear on a wall, very pretty. ..."

Aaaarrrggghhh! The forerunner of countless evenings of boredom beyond belief of that curse of the 20th century - the Holiday Slide Show: "...now this one would have been *really* interesting, but the man moved just as i was taking it so you can only see a bit of the lion. Oh, no, *that's* the one with the warthog...." as yet another fuzzy picture of African savannah hoves into view, and your brain glazes over.

Interesting insight into how Sam's brain works - he really, really wants to know all.

Alec   Link to this

>> Sam, just wait a few years, and a young guy named Isaac will explain the theory behind the refractions.

My goode frynde Robert Hooke finds that man somewhat disagreeable. Sam has spent many happy hours investigating the world through Mr Hooke's perspectives:

http://www.pepysdiary.com/diary/1661/02/11/

Scrolling forward four centuries, Sam is very much what we would now call a techno-geek. Before long he was using the fashionable term for perspectives, that is microscopes and telescopes:

http://www.pepysdiary.com/diary/1664/02/13/

His goode frynde John Spong actually *built* his own microscopes:

http://www.pepysdiary.com/diary/1664/08/07/

Sam once paid the princely sum of 5 pounds 6 shillings for one:

http://www.pepysdiary.com/diary/1664/08/13/

He has also purchased Microscopes for Dummies by Mr. Henry Powers and my frynde Mr. Hook.

http://www.pepysdiary.com/diary/1665/01/02/

>> Aaaarrrggghhh! The forerunner of countless evenings of boredom beyond belief of that curse of the 20th century - the Holiday Slide Show:

Wa-haha!

jeannine   Link to this

"Evidently they did not yet understand that since the earth revolves around the sun"

Larry, this gave me a chuckle as we ALL know that Sam believes the world revolves around Sam (much to our enjoyment).

Does anyone remember playing a game with a flashlight as a kid where you'd make 'hand puppets' to put on a show? Many evening camping, etc. as a kid that would actually be fun entertainment.

JWB   Link to this

Previously I called attention to Owen Gingerich's "The Book Nobody Read: the Revolution of Nicolaus Copernicus" in which the Harvard Science History Prof. debunks Arthur Koestlers's claim that nobody read the book. Obviously Sam has not read the book, nor has Spong.

Terry W   Link to this

"Does anyone remember ..... "

Yes, Jeannine, I remember scaring my sister with that technique when I was a kid. Lying in bed you can make quite a convincing "spider" on the ceiling with just a torch and your open hand. :-)

Ruben   Link to this

I remember the wonder discovering "chinese siluetes", as we called that when I was a boy in Parque Camet, Mar del Plata, Argentina.
If you think you can stand another wonder just see what a professional (Raymond Crowe) can do with his hands in:

http://www.youtube.com/watch?v=KW-3KwXpkkM&feat...
(they are more clips)

cgs   Link to this

Questions and the seeking of answers.
Why did it take so long to ask in depth so many questions?
I dothe thinke all those spices and sugars, beans-, coffee -Lima, teas, claret, Nell's China oranges, mole tangerines, etal did modify the gray matter.

Terry Foreman   Link to this

"Why did it take so long to ask in depth so many questions?"

As Francis Bacon explained, we assume and seek regularity.

Michael Robinson   Link to this

Why did it take so long to ask in depth so many questions?

Questions were being asked, and interesting answers formulated, for several generations prior, and post, see the wonderful work by J. L. Heilbron 'The Sun in the Church: Cathedrals as Solar Observatories.' Cambridge, Mass.: 1999.

The following is a web-guide with links:
http://www.math.nus.edu.sg/aslaksen/teaching/he...

cgs   Link to this

Thanks, please note only 3 dates precede the current Samuel's time, most questions were stymied by the usual answers that most modern children face today of "do not waste my time" type.

Michael Robinson   Link to this

only 3 dates precede the current Samuel’s time

Arguably modern astronomy begins with Toscanelli (1397 - 1482) and his observations and calculations of the orbits of the comets of 1433, 1449-50, of the appearance of Halley's comet in 1456, and the comets of May, 1457, of June-July-August, 1457, and 1472. Heilbron is generally available and repays many fold the reading; it may be a revelation, according to Dr. Heilbron, the church "gave more financial and social support to the study of astronomy for over six centuries, from the recovery of ancient learning during the late Middle Ages into the Enlightenment, than any other, and probably, all other, institutions."
http://www.nytimes.com/learning/students/pop/10...

cgs   Link to this

Thanks MR:
I was also alluding to all the other goings at this time from poisoning the rat and and why the wind blew, why time matters, submarines [under water row boats], using gears for the 9 times multiplication table and so many other curious unexplained happenings mixing xyz's with human thought. The list is long, slide rules, lines on paper banking the beginning of derivatives, calculating fire insurance, betting on if a ship will make it to Bombay and back, burning holes in the table cloth using lenses, reading small print, painting people using a perspective box.etc. .

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