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Word A Word B Word C Word D Occurrence Frequency Band MI MI Band Prominent
water_n earth_n great_a place_n 4,941 5 4.6672 4 false
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ID Title Author Corrected Date of Publication (TCP Date of Publication) STC Words Pages
B03739 May it please the King's most excellent Majesty Halley, Edmond, 1656-1742. 1687 (1687) Wing H451A; ESTC R177810 7,193 14

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shall_v hold_v they_o to_o the_o sun_n as_o it_o do_v the_o planet_n they_o fly_v off_o again_o and_o distance_n themselves_o from_o the_o sun_n and_o earth_n so_o that_o they_o soon_o be_v out_o of_o sight_n and_o the_o fewness_n and_o inaccuracy_n of_o the_o observation_n antiquity_n have_v leave_v we_o be_v not_o sufficient_a to_o determine_v whether_o the_o same_o comet_n ever_o return_v again_o but_o this_o author_n have_v show_v how_o geometrical_o to_o determine_v the_o orb_n of_o a_o comet_n from_o observation_n and_o to_o find_v his_o distance_n from_o the_o earth_n and_o sun_n which_o be_v never_o before_o do_v the_o three_o thing_n here_o do_v be_v the_o theory_n of_o the_o moon_n all_o the_o inequality_n of_o who_o motion_n be_v prove_v to_o arise_v from_o the_o same_o principle_n only_o here_o the_o effect_n of_o two_o centre_n operate_n on_o or_o attract_v a_o project_v body_n come_v to_o be_v consider_v for_o the_o moon_n though_o principal_o attract_v by_o the_o earth_n and_o move_v round_o it_o do_v together_o with_o the_o earth_n move_v round_o the_o sun_n once_o in_o a_o year_n and_o be_v according_a as_o she_o be_v near_a or_o far_o from_o the_o sun_n draw_v by_o he_o more_o or_o less_o than_o the_o centre_n of_o the_o earth_n about_o which_o she_o move_v whence_o arise_v several_a irregularity_n in_o her_o motion_n of_o all_o which_o the_o author_n in_o this_o book_n with_o no_o less_o subtlety_n than_o industry_n have_v give_v a_o full_a account_n and_o though_o by_o reason_n of_o the_o great_a complication_n of_o the_o problem_n he_o have_v not_o yet_o be_v able_a to_o make_v it_o pure_o geometrical_a it_o be_v to_o be_v hope_v that_o in_o some_o far_a essay_n he_o may_v surmount_v the_o difficulty_n and_o have_v perfect_v the_o theory_n of_o the_o moon_n the_o long_a desire_a discovery_n of_o the_o longitude_n which_o at_o sea_n be_v only_o practicable_a this_o way_n may_v at_o length_n be_v bring_v to_o light_v to_o the_o great_a honour_n 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and_o in_o the_o other_o case_n the_o water_n in_o n_o tend_v less_o towards_o the_o moon_n that_o the_o centre_n c_o be_v leave_v behind_o by_o as_o much_o as_o be_v the_o difference_n of_o the_o gravitation_n towards_o the_o moon_n in_o c_o and_o n._n this_o right_o understand_v it_o follow_v plain_o that_o the_o sea_n which_o otherwise_o will_v be_v spherical_a upon_o the_o pressure_n of_o the_o moon_n must_v form_v itself_o into_o a_o spheroidal_a or_o oval_a figure_n who_o long_a diameter_n be_v where_o the_o moon_n be_v vertical_a and_o short_a where_o she_o be_v in_o the_o horizon_n and_o that_o the_o moon_n shift_v her_o position_n as_o she_o turn_v round_o the_o earth_n once_o a_o day_n this_o oval_a of_o water_n shift_n with_o she_o occasion_v thereby_o the_o two_o flood_n and_o ebb_n observable_a in_o each_o 25_o hour_n and_o this_o may_v suffice_v as_o to_o the_o general_a cause_n of_o the_o tide_n it_o remain_v now_o to_o show_v how_o natural_o this_o notion_n account_v 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paribus_fw-la the_o aequinoctial_a spring_n tide_n in_o march_n and_o september_n or_o near_o they_o be_v the_o high_a and_o the_o neap_n tide_v the_o low_a which_o proceed_v from_o the_o great_a agitation_n of_o the_o water_n when_o the_o fluid_a sphaeroid_fw-fr revolve_v about_o a_o great_a circle_n of_o the_o earth_n than_o when_o it_o turn_v about_o in_o a_o lesser_a circle_n it_o be_v plain_a that_o if_o the_o moon_n be_v constitute_v in_o the_o pole_n and_o there_o stand_v that_o the_o spheroid_fw-fr will_v have_v a_o fix_a position_n and_o that_o it_o will_v be_v always_o high_a water_n under_o the_o pole_n and_o low_a water_n every_o where_o under_o the_o aequinoctial_a and_o therefore_o the_o near_a the_o moon_n approach_v the_o pole_n the_o less_o be_v the_o agitation_n of_o the_o ocean_n which_o be_v always_o great_a where_o the_o moon_n be_v in_o the_o aequinoctial_a or_o far_a distant_a from_o the_o pole_n whence_o the_o sun_n and_o moon_n be_v either_o conjoin_v or_o opposite_a in_o the_o aequinoctial_a produce_v the_o great_a spring_n tide_n and_o the_o subsequent_a neap_n tide_n be_v produce_v by_o the_o tropical_a moon_n in_o the_o quarter_n be_v always_o the_o least_o tide_n whereas_o in_o june_n and_o december_n the_o spring_n tide_n be_v make_v by_o the_o tropical_a sun_n and_o moon_n and_o therefore_o less_o vigorous_a and_o the_o neap_n tide_n by_o the_o aequinoctial_a moon_n which_o therefore_o be_v the_o strong_a hence_o it_o happen_v that_o the_o difference_n between_o the_o spring_n and_o neap_n tide_n in_o these_o month_n be_v much_o less_o considerable_a than_o in_o march_n and_o september_n and_o the_o reason_n why_o the_o very_o high_a spring_n tide_n be_v find_v to_o be_v rather_o before_o the_o vernal_a and_o after_o the_o autumnal_a equinox_n viz._n in_o
february_n and_o october_n than_o precise_o upon_o they_o be_v because_o the_o sun_n be_v near_a the_o earth_n in_o the_o winter_n month_n and_o so_o come_v to_o have_v a_o great_a effect_n in_o produce_v the_o tide_n hitherto_o we_o have_v consider_v such_o affection_n of_o the_o tide_n as_o be_v universal_a without_o relation_n to_o particular_a case_n what_o follow_v from_o the_o differ_a latitude_n of_o place_n will_v be_v easy_o understand_v by_o the_o follow_a figure_n but_o the_o motion_n hitherto_o mention_v be_v somewhat_o alter_v by_o the_o libration_n of_o the_o water_n whereby_o though_o the_o action_n of_o the_o luminary_n shall_v cease_v the_o flux_n and_o reflux_n of_o the_o sea_n will_v for_o some_o time_n continue_v this_o conservation_n of_o the_o impress_a motion_n diminish_v the_o difference_n that_o otherwise_o will_v be_v between_o two_o consequent_a tide_n and_o be_v the_o reason_n why_o the_o high_a spring-tide_n be_v not_o percise_o on_o the_o new_a and_o full_a moon_n nor_o the_o neape_n on_o the_o quarter_n but_o general_o they_o be_v the_o three_o tide_n after_o they_o and_o sometime_o late_a all_o these_o thing_n will_v regular_o come_v to_o pass_v if_o the_o whole_a earth_n be_v cover_v with_o sea_n very_o deep_a but_o by_o reason_n of_o the_o sholeness_n of_o some_o place_n and_o the_o narrowness_n of_o the_o straits_n by_o which_o the_o tide_n be_v in_o many_o case_n propagate_v there_o arise_v a_o great_a diversity_n in_o the_o effect_n and_o not_o to_o be_v account_v for_o without_o a_o exact_a knowledge_n of_o all_o the_o circumstance_n of_o the_o place_n as_o of_o the_o position_n of_o the_o land_n and_o the_o breadth_n and_o depth_n of_o the_o channel_n by_o which_o the_o tide_n flow_v for_o a_o very_a slow_a and_o imperceptible_a motion_n of_o the_o whole_a body_n of_o the_o water_n where_o it_o be_v for_o example_n 2_o mile_n deep_a will_v suffice_v to_o raise_v its_o surface_n 10_o or_o 12_o foot_n in_o a_o tide_n time_n whereas_o if_o the_o same_o quantity_n of_o water_n be_v to_o be_v convey_v upon_o a_o channel_n of_o 40_o fathom_n deep_a it_o will_v require_v a_o very_a great_a stream_n to_o effect_v it_o in_o so_o large_a inlet_n as_o be_v the_o channel_n of_o england_n and_o the_o german_a ocean_n whence_o the_o tide_n be_v find_v to_o set_v strong_a in_o those_o place_n where_o the_o sea_n grow_v nar●owest_a the_o same_o quantity_n of_o water_n be_v to_o pass_v through_o a_o small_a passage_n this_o be_v most_o evident_a in_o the_o straits_n between_o portland_n and_o cape_n de_fw-fr hague_n in_o normandy_n where_o the_o tide_n run_v like_o a_o sluice_n and_o it_o will_v be_v yet_o more_o between_o dover_n and_o calais_n if_o the_o tide_n come_v about_o the_o island_n from_o the_o north_n do_v not_o check_v it_o and_o this_o force_n be_v once_o impress_v upon_o the_o water_n continues_z to_o carry_v it_o about_o the_o level_n of_o the_o ordinary_a height_n in_o the_o ocean_n particular_o where_o the_o water_n meet_v a_o direct_a obstacle_n as_o it_o be_v at_o st._n malo_n and_o where_o it_o enter_v into_o a_o long_a channel_n which_o run_v far_o into_o the_o land_n grow_v very_o straight_o at_o its_o extremity_n as_o it_o be_v in_o the_o severn-sea_n at_o chepstow_n and_o bristol_n this_o sholeness_n of_o the_o sea_n and_o the_o intercurrent_a continent_n be_v the_o reason_n that_o in_o the_o open_a ocean_n the_o time_n of_o high_a water_n be_v not_o at_o the_o moon_n appulse_n to_o the_o meridian_n but_o always_o some_o hour_n after_o it_o as_o it_o be_v observe_v upon_o all_o the_o west_n coast_n of_o europe_n and_o africa_n from_o ireland_n to_o the_o cape_n of_o good-hope_a in_o all_o which_o a_o s._n w._n moon_n make_v high_a water_n and_o the_o same_o be_v report_v to_o be_v on_o the_o west_n side_n of_o america_n but_o it_o will_v be_v endless_a to_o account_v for_o all_o those_o particularity_n which_o be_v consequence_n of_o this_o hypothesis_n as_o why_o lake_n such_o as_o the_o caspian_a sea_n and_o mediterranian-sea_n such_o as_o the_o black-sea_n the_o straits_n and_o baltic_a have_v no_o sensible_a tide_n for_o lake_n have_v no_o communication_n with_o the_o ocean_n can_v neither_o increase_v nor_o diminish_v their_o water_n whereby_o to_o rise_v and_o fall_v and_o sea_n that_o communicate_v by_o such_o narrow_a inlett_n and_o be_v of_o so_o immense_a a_o extent_n can_v in_o a_o few_o hour_n time_n receive_v or_o empty_a water_n enough_o to_o raise_v or_o sink_v their_o surface_n any_o thing_n sensible_o last_o to_o demonstrate_v the_o excellency_n of_o this_o doctrine_n the_o example_n of_o the_o tide_n in_o the_o port_n of_o tunk_v in_o china_n which_o be_v so_o extraordinary_a and_o differ_v from_o all_o other_o we_o have_v yet_o hear_v of_o may_v suffice_v in_o this_o port_n there_o be_v but_o one_o flood_n and_o ebb_n in_o 24_o hour_n and_o twice_o in_o each_o month_n viz._n when_o the_o moon_n be_v near_o the_o equinoctial_a there_o be_v no_o tide_n at_o all_o but_o the_o water_n be_v stagnant_a but_o with_o the_o moon_n declination_n there_o begin_v a_o tide_n which_o be_v great_a when_o she_o be_v in_o the_o tropical_a sign_n only_o with_o this_o difference_n that_o when_o the_o moon_n be_v to_o the_o northward_o of_o the_o aequinoctial_a it_o flow_v when_o she_o be_v above_o the_o earth_n and_o ebb_n when_o she_o be_v under_o so_o as_o to_o make_v high_a water_n at_o moon_n set_v and_o low_a water_n at_o moon_n rise_v but_o on_o the_o contrary_a the_o moon_n be_v to_o the_o southward_n make_v high_a water_n at_o rise_v and_o low_a water_n at_o set_v it_o ebb_a all_o the_o time_n she_o be_v above_o the_o horizon_n as_o may_v be_v see_v more_o at_o large_a in_o the_o philosophical_a transaction_n num._n 162._o the_o cause_n of_o this_o odd_a appearance_n be_v propose_v by_o mr._n newton_n to_o be_v from_o the_o concurrence_n of_o two_o tide_n the_o one_o propagate_v in_o six_o hour_n out_o of_o the_o great_a 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