Selected quad for the lemma: day_n

Word A	Word B	Word C	Word D	Occurrence	Frequency Band	MI	MI Band	Prominent
day_n	east_n	hour_n	minute_n	4,917	5	12.2222	5	false

Text snippets containing the quad

ID	Title	Author	Corrected Date of Publication (TCP Date of Publication)	STC	Words	Pages
A60281	The hydrostaticks, or, The weight, force, and pressure of fluid bodies, made evident by physical, and sensible experiments together vvith some miscellany observations, the last whereof is a short history of coal, and of all the common, and proper accidents thereof, a subject never treated of before / by G.S.	Sinclair, George, d. 1696.	1672 (1672)	Wing S3854; ESTC R38925	208,492	331

Zodiack than in another for in Summer when he is furthest from the Earth he goes slowlier back in the Ecliptick than in Winter when he is nearer to it The second cause which is truly the far greater is this because in the diurnal motion of the Sun equal parts of the Aequator does not answer to equal parts of the Zodiack Hence it followes that if the natural dayes be not equal among themselves the hours must be unequal also but this is not considerable By help of such a Tub placed in a dark room it is easie when the Sun is under Eclipse to enumerat distinctly the digits eclipsed Likewise if you take out the object Glass and cover a hole in the window board with it you shall see distinctly upon a white wall the species and true representations of all objects without And by comparing the quantity of the object without with the quantity of it within you may know the distance of it from the window though it were many miles For as the one quantity is to the other so is the distance between the Glass and the object on the wall to the distance between the Glass and the object without It may be inquired whether or not the retrograde as well as the diurnal motion of any of the Planets may be discerned in minuts or seconds by the help of a long Telescope In answer to this we must suppose the Planets only to have a retrograde motion and consequently to move slowly from West to East Saturn once in 29 years or 30 to run about the Zodiack Iupiter in 12 Mars in 2 years the Sun in one year Venus and Mercury in less time and lastly the Moon in a moneth Now I say it is impossible by the longest Tub that the greatest Artist can make to discern the motion of the inferior Planets far less the motion of the superior either in Minuts or in Seconds and that by reason of the great ta●dity and slowness of the motion Notwithstanding of this I am induced to think that the retrograde motion of the Moon might be discerned at least in Minuts For evincing of this let us suppose which is true that the Sun runs from East to West half a degree in two Minuts of time seing in an hour he runs 15 degrees Next that the Moon goes about the Zodiack in 27 dayes and 7 hours namely from that same point to that point again and consequently runs back every day 13 degrees and about 10 Minuts By this account she must retrograde half a degree and about 2 minuts of a degree every hour The Sun then runs half a degree in two Minuts and the Moon half a degree in 60 Minuts therefore the Moon must be 30 times slower in her retrograde motion than the Sun is in his diurnal motion Let us suppose next as I observed with a Tub 12 foot long that the image of the Sun runs the eighth part of an inch every second and consequently seven inches and an half in a Minut then must the image of the Moon with that same Telescope run the thirtieth part of seven inches and a half in a Minut seing she runs 30 times slowlier therefore in every Minut of time she must advance the fourth part of an inch which will be very sensible Though we grant that the Moon hath no retrograde motion properly yet by comparing the diurnal Motion of the Moon that 's slower to the diurnal motion of the Sun that 's swifter we shall really find the thing it self Therefore in the time of a Solar Eclipse this retrograde motion is conspicuous which by an ordinary Telescope may be discerned in Minuts Assoon then as the East side of the Moon begins to enter upon the West side of the Sun the greater the Eclipse be it is the better observe and you will find the one image which will be black cover the other by degrees that 's splendid and run in every minut of time the fourth part of an inch of the Suns diameter provided alwayes that the Sun run the eighth part of an inch in a second OBSERVATION IV. UPon Tuesday the 19. of Iuly 1670 the following Experiment was made In the middle Marches between Scotland and England there is a long tract of Hills that run from Flowdon many miles South and South-west amongst the which the Mountain Cheviot is famous beyond and conspicuous above all the rest for altitude from whose top a man may discern with one turning of his eye the whole Sea-coast from New-castle to Berwick much of Northumberland and very many Leagues into the great German Ocean the whole Mers and Teviotdale from the foot of Tweed to very near the head of it Lauderdale and Lammer-moor and Pentland-hills above Edinburgh The North side of this Mountain is pretty steep yet easie to climb either with men or horse The top is spacious large and broad and all covered with a Flow-moss which runs very many miles South When a man rides over it it rises and falls 'T is easie to thrust a Lance over the head in it The sides of this Hill abounds with excellent Well-springs which are the original of several Torrents amongst the which Colledge-Water is famous upon which not a mile from the foot of this Mountain is White-hall The adjacent Hills are for the most part green and excellent for the pasturage of Cattel Not many years ago the whole Valleys near the foot of Cheviot were Forrests abounding with Wild-Deer Upon the highest part of this Mountain was erected the Torricellian Experiment for weighing of the Air where we found the altitude of the Mercurial Cylinder 27 inches and an half The Air was dry and clear and no wind In our Valley-Countreys near to the Sea-Coast in such Weather we find the altitude 29 inches and an half When this difference was found care was taken to seal up closly with Bee-wax mixed with Turpentine the orifice of the Vessel that contained the stagnant Mercury and thorow which the end of the Pipe went down This being done with as great exactness as could be it was carried to the foot of the Mountain in a Frame of Wood made on purpose and there opening the mouth of the Vessel we found the Mercury to rise an inch and a quarter higher than it was The reason of this strange Phenomenon must be this namely a greater Pressure of the Air at the foot of the Hill than upon the top even as there is a greater Pressure of Water in a surface 40 fathom deep than in a surface 20 fathom deep 'T is not to be doubted but if the root of the Mountain had been as low as the Sea Coast or as the surface of Tweed at Kelso the Mercurial Cylinder would have been higher This way of observing seems to be better than the common for while the Baroscope is carried up and down the Hill without stopping the orifice of the Vessel that contains the stagnant Mercury the Cylinder makes such reciprocations

that Decemb. 13. 1669 one Doctor Beal found the Mercury in the Baroscope never to be so high as it was then That same very day I found the hight of it 29 inches and nine ten parts which I never observed before And though the day here was dark and the Heavens covered with Clouds yet no rain for many dayes followed but much dryness and fair weather On Saturday night March 26 1670 I found the altitude no more than 27 and nine ten parts This night was exceeding windy with a great rain On February 1 1671. I found the altitude 30 inches and the Heavens most clear But in the most part of May following I have found the hight but 27 inches and five ten parts in which time there was abundance of rain OBSERVATION XIV NOvember 7. 1670. I made exact trial with the Magnetick Needle for knowing the variation and I found it vary from the North three degrees and a half towards the West Hevelius writes from Dantzick to the Royal Society at London Iuly 5. 1670 that it varies with him seven degrees twenty minuts west OBSERVATION XV. DEcember 17. 1669 I observed with a large Quadrant half 9 a clock at night the formost Guard-star when it was in the Meridian and lowest to have 41 degrees 22 minuts of altitude And on Ianuary 7. 1670 at 7 a clock in the morning I found it when it was in the Meridian and highest to have 70 degrees 27 minuts Hence I conclude the elevation of the Pole here to be 55 degrees 54 minuts 30 seconds and consequently as much at Edinburgh because both the places are upon one and the same Parallel OBSERVATION XVI FOr finding the true Meridian follow this method In some convenient place fix two Wyre strings with weights at them that they may hang perpendicular Then in the night time observe when the fourth star of the Plough begins to come near to the lowest part of the Meridian at which time you will find the Polar star highest Then so order the two strings by moving them hither and thither till both of them cover both the said Stars then shall they in that position give you the true South and North. This observation is the product of the seventh OBSERVATION XVII THere fell out in Mid and East-Lothian on Thursday May 11 1671 in the afternoon a considerable shour of hail with thunder and rain It came from the South-west with a great blast of wind and ran alongs from Picts-land-hills north-North-east towards the Sea coast The hail were big in several places as Musquet Ball and many of them rather oval than round Some persons suffered great loss of their young Pease others of their Glass Windows Eight or ten days before there was a considerable heat and dry VVeather For 20 dayes after cold Easterly winds with rain every day but especially in the end of the Moneth extraordinary rain and mist. This is so much the more to be observed because in this Countrey seldom such extraordinary hail falls out This year the Agues and Trembling Fevers have been most frequent and to many deadly OBSERVATION XVIII I Did hear lately of a curious Experiment in Germany made by a Person of note which I shall briefly in this Observation let the Reader understand And though I have heard since that it is now published in Print yet I hope it will not be impertinent to mention it here especially for their cause who cannot conveniently come to the knowledge of such things And for this reason also that I may explicat the Phenomena thereof from the foregoing doctrine and demonstrat particularly the true cause of that admirable effect that 's seen in it which I desiderat in the publisher The Auctor then takes two Vessels of Brass each one of them in form of half a sphere of a pretty large size Nothing can more fitly represent them for form and quantity than two Bee-skeps Only each of them hath a strong Ring of Brass upon the Center without and they are so contrived by the Artist that their orifices agree most exactly so that when they are united they represent an intire Sphere almost In one of the sides there 's a hole and a Brass Spigot in it through which the whole Air within is exsucted and drawn out namely by the help of the Air-pump And when by several exsuctions the Vessels are made empty the Stop-cock is turned about by which means no Air can come in And they remaining empty are taken from the Pump and do cleave so fast together that though a number of lusty fellows 12 on each side do pull vigorously by help of ropes fastned to the Rings yet are they not able to pull them asunder And because this will not do it he yokes in 12 Coach Horses six on every side yet are they not sufficient though they pull contrariwise to other to make a separation But to let the Spectators see that they may be pulled asunder he yokes in 9 or 10 on every side and then after much whipping and sweating they pull the one from the other The cause of this admirable effect is not the fear of vacuity as some do fancy for if that were all the Horses in Germany would not pull them asunder no not the strength of Angels It must then be some extrinsick weight and force that keeps them together which can be nothing else but the weight of the invironing Air. Because no sooner a force is applied that 's more powerful than the weight of the Air but assoon they come asunder And so neither six men nor six horses on each side are able to do it but nine or ten on each side makes a separation For understanding the true cause of this Phenomenon we must consider that the Vessels are 18 inches in diameter I● this be then according to the last Experiment there are two Pillars of Air each one of them as heavy as a Pillar of Mercury 18 inches thick and 29 inches long by which they are united Or each Pillar of Air is as heavy as a Pillar 0● Water 34 foot high and 18 inches in diameter For finding the weight of it in pounds and consequently the weight of each Pillar of Air by which the two Vessels are united follow this method First multiply 9 the semi-diameter of the Pillar by 54 the circumference and this gives you 486 the half whereof is the bounds of the Area namely 243. And because 34 foot contains 408 inches I multiply 408 by 243 the product whereof is 99144 so many square inches are in a Pillar of Water 34 foot high and 18 inches thick Now seing there are 1728 inches in a cubical foot I divide the number 99144 by this number and I find 57 square foot of Water and more And because every square foot weighs 56 pound Trois I multiply 56 by the number 57 and the product is 3192 pound which is the just weight of a Pillar of Water 34 foot high and 18