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http://www.youtube.com/watch?v=9Vl9YhDvc9k

 

Χάρτινο το φεγγαράκι, Μάνος Χατζιδάκις, Νίκος Γκάτσος

 

Θα φέρει η θάλασσα πουλιά

κι άστρα χρυσά τ' αγέρι

να σου χαϊδεύουν τα μαλλιά

να σου φιλούν το χέρι.

 

Χάρτινο το φεγγαράκι

ψεύτικη ακρογιαλιά

αν με πίστευες λιγάκι

θα 'σαν όλα αληθινά.

 

Δίχως τη δική σου αγάπη

δύσκολα περνά ο καιρός.

Δίχως τη δική σου αγάπη

είναι ο κόσμος πιο μικρός.

 

Χάρτινο το φεγγαράκι

ψεύτικη ακρογιαλιά

αν με πίστευες λιγάκι

θα 'σαν όλα αληθινά. (δις)

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My Optics

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Bringing the Sun Indoors, Scientific American, Σεπτέμβριος 1938

 

Πλήρες κείμενο

 

Bringing the Sun Indoors

AT the Hayden Planetarium in New York a huge 26-foot image of the sun is being projected on the interior of the dome every day that the sun shines. This is accomplished by means of a first system of moving and fixed flat mirrors for bringing the sun’s image indoors and a second system of mirrors and lenses for enlarging and projecting it.

 

The actual sun is shown at the top of the drawing. Its rays are caught by an eight-inch flat mirror mounted on an axis parallel with the earth’s axis. A clock-like mechanism slowly turns this mirror as the earth’s turning “moves” the sun. This image, after passing through an opening in the building, is kept constantly spotted on a second flat mirror which is permanently fixed in position. It in turn passes the image downward to the third element of the Jong optical train, a flat mirror fixed at a 45-degree angle which turns it horizontally. The sun’s image is now where it can be used but as yet it is neither magnified nor projected.

 

Magnification is done in an ordinary eight-inch reflecting telescope, just as it would be if that telescope were directed at the sun out of doors; and since it is possible with any telescope to view the image not alone by looking into the eyepiece but also by projecting it on a screen at some distance from the eyepiece, the same is done at the planetarium. Here the distance is long, hence the image is very large—larger, in fact, than any solar image previously projected by similar methods. All this apparatus—the coelostat, fixed flats, and telescope—is entirely separate from the regular planetarium apparatus and could be similarly used with any ordinary house or building.

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My Optics

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The Lost Pleiad, John Brainard, 1796-1828

 

O! How calm and how beautiful -- look at the night !

The planets are wheeling in pathways of light ;

And the lover, or poet, with heart, or with eye,

Sends his gaze with a tear, or his soul with a sigh.

But from Fesole's summit the Tuscan looked forth,

To eastward and westward, to south and to north ;

Neither planet nor star could his vision delight,

'Till his own bright Pleiades should rise to his sight.

They rose, and he numbered their glittering train --

They shone bright as he counted them over again ;

But the star of his love, the bright gem of the cluster,

Arose not to lend the Pleiades its lustre.

And thus, when the splendor of beauty has blazed,

On light and on loveliness, how have we gazed !

And how sad have we turned from the sight, when we found

That the fairest and sweetest was "not on the ground".

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My Optics

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GOTO E5 Planetarium, Ilan Ramon Youth Physics Center

 

GOTO ονομάζεται η εταιρία οπτικών που ίδρυσε το 1925 ο Seizo Goto ως GOTO OPTICAL MFG. Co. στο σπίτι του στην Sangenjaya, Setagaya-ku στο Τόκυο. Η GOTO ξεκίνησε με ένα διοπτρικό ενός φακού 25mm και εστιακού μήκους 80mm. Σήμερα, ως GOTO Inc διαθέτει μια εξαιρετική γκάμα υβριδικών και μη πλανηταρίων, τα CHIRON, SUPER-HELIOS, SUPER-URANUS, CHRONOS II και GS, GEⅡ, E-5, NEX αντίστοιχα, τοποθετεί όμως και τηλεσκόπια σε εκπαιδευτικά ιδρύματα και παρατηρητήρια.

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My Optics

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Βεδικό Πλανητάριο, Mayapur, Ινδία, Σχέδιο

 

Σχέδιο ενός Βεδικού Πλανηταρίου σύμφωνα με τις αρχές που καθόρισε το 1976 ο Srila Prabhupada. Θα παρουσιάζει την Βεδική Κοσμολογία και τις κινήσεις των πλανητών σύμφωνα με την παράδοση της Srimad Bhagavatam και άλλων Purana, καθώς και της Brahma Samhita.

 

Το Πλανητάριο θα ονομαστεί μάλλον "Ναός της Κατανόησης"

Η Mayapur, στον Γάγγη, είναι η Μέκκα και η Ιερουσαλήμ του Ινδουισμού.

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My Optics

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The Two Comets, John Brainard, 1796-1828

 

There once dwelt in Olympus some notable oddities,

For their wild singularities called Gods and Goddesses. -

But one in particular beat 'em all hollow,

Whose name, style, and title was Phœbus Apollo.

Now Phœb. was a genius his hand he could turn

To any thing, every thing genius can learn :

Bright, sensible, graceful, cute, spirited, handy,

Well bred, well behaved a celestial Dandy !

An eloquent god, though he didn't say much ;

But he drew a long bow, spoke Greek, Latin, and Dutch ;

A doctor, a poet, a soarer, a diver,

And of horses in harness an excellent driver.

He would tackle his steeds to the wheels of the sun,

And he drove up the east every morning, but one ;

When young Phaeton begged of his daddy at five,

To stay with Aurora a day, and he'd drive.

So good-natured Phœbus gave Phaey the seat,

With his mittens, change, waybill, and stage-horn complete ;

To the breeze of the morning he shook his bright locks,

Blew the lamps of the night out, and mounted the box.

The crack of his whip, like the breaking of day,

Warmed the wax in the ears of the leaders, and they

With a snort, like the fog of the morning, cleared out.

For the west, as young Phaey meant to get there about

Two hours before sunset

He looked at his "turnip",

And to make the delay of the old line concern up,

He gave 'em the reins; and from Aries to Cancer,

The style of his drive on the road seemed to answer ;

But at Leo, the ears of the near-wheel horse pricked,

And at Virgo the heels of the off leader kicked ;

Over Libra the whiffle-tree broke in the middle,

And the traces snapped short, like the strings of a fiddle.

One wheel struck near Scorpio, who gave it a roll,

And set it to buzz, like a top, round the pole ;

While the other whizzed back with its linchpin and hub,

Or, more learnedly speaking, its nucleus or hub ;

And, whether in earnest, or whether in fun,

He carried away a few locks of the sun.

The state of poor Phaeton's coach was a blue one,

And Jupiter ordered Apollo a new one ;

But our driver felt rather too proud to say "Whoa,"

Letting horses, and harness, and every thing go

At their terrified pleasure abroad; and the muse

Says, they cut to this day just what capers they choose ;

That the eyes of the chargers as meteors shine forth ;

That their manes stream along in the lights of the north ;

That the wheels which are missing are comets, that run

As fast as they did when they carried the sun ;

And still pushing forward, though never arriving,

Think the west is before them, and Phaeton driving.

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Οὖτιν με κικλήσκουσι

 

My Optics

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