simple pendulumn.

Brit.

/ˌsɪmpl ˈpɛndjᵿləm/,

/ˌsɪmpl ˈpɛndʒᵿləm/, U.S.

/ˌsɪmpəl ˈpɛndʒələm/,

/ˌsɪmpəl ˈpɛndjələm/

Origin: Formed within English, by compounding. Etymons: simple adj., pendulum n.

Etymology: < simple adj. + pendulum n.

1. A pendulum consisting only of a bob suspended by a cord or wire, spec.: (a) (in a clock) one which is not equipped with a mechanism that compensates for the effects of heat, friction, etc.; †(b) one which is not a part of a mechanism and is designed to approximate an ideal pendulum (see sense 2) for use in measuring gravity or oscillatory phenomena (obsolete).

ΘΚΠ

the world > time > instruments for measuring time > clock > [noun] > pendulum clock > pendulum

pendule1660

pendulum1660

simple pendulum1673

bob-pendulum1685

swing1696

quicksilver pendulum1726

pendle1741

gridiron pendulum1751

mercurial pendulum1786

gridiron1793

wanrest1794

seconds pendulum1795

conical pendulum1813

ticker1821

noddy1844

1673 Philos. Trans. (Royal Soc.) 8 6069 A simple Pendulum being no Certain and Equal Measure of time, in regard that larger excursions are observ'd to be slower than the narrower.

1688 R. Waller tr. Meas. Earth xii. 5 in A. Pitfield tr. C. Perrault Mem. Nat. Hist. Animals 'Tis commonly known, that to make a simple Pendulum, a little ball about the bigness of a Musquet Bullet, is suspended by a very flexible thread, and the length of this Pendulum must be measured from the top of the thread to the center of the Ball.

1795 C. Hutton Math. & Philos. Dict. II. 210 Simple Pendulum, and Detached Pendulum, are terms sometimes used to denote such Pendulums as are not connected with any clock, or clock-work.

1862 H. Worms Earth & its Mechanism iv. 45 The clock-work is set in motion, and the simple pendulum also.

1975 D. Howse Greenwich Observatory III. xi. 127 Before 1726 he acquired two more clocks from Graham, with dead-beat escapements and simple pendulums, for £12 each.

2004 R. J. Matthys Accurate Clock Pendulums i. 4 A common rate adjustment scheme for simple pendulums is to slide the top end of the suspension spring up and down through a narrow slot.

2. A theoretical or ideal pendulum, consisting of a single point that has mass but no extent, is suspended by a massless inextensible rod, and moves without friction.

ΘΚΠ

the world > space > relative position > support > hanging or suspension > [noun] > that which hangs or is suspended > a pendulum > types of

compound pendulum1723

simple pendulum1728

inverted pendulum1773

horizontal pendulum1775

conical pendulum1813

spherical pendulum1862

the world > movement > motion in specific manner > alternating or reciprocating motion > oscillation > [noun] > swinging or oscillation of suspended body > that which > pendulum > types of

compound pendulum1723

simple pendulum1728

inverted pendulum1773

horizontal pendulum1775

conical pendulum1813

spherical pendulum1862

1728 E. Chambers Cycl. at Pendulum Simple Pendulum, is that consisting of a single Weight..considered as a point.

1864 Proc. Royal Soc. 1863–4 13 392 When the motion of the particles of air follows the law of oscillation of a simple pendulum, the resulting sound may be called a simple tone.

1948 A. L. Rawlings Sci. Clocks & Watches (ed. 2) iii. 26 For the present we will disregard the stiffness of the suspension spring and the mass of the rod; that is to say, we will suppose we have what is called a simple pendulum.

2010 C. Roberts Ordinary Differential Equations iv. 200 A simple pendulum can be modelled by a second order homogeneous linear differential equation with constant coefficients.

This entry has been updated (OED Third Edition, September 2019; most recently modified version published online March 2022).

单词	simple pendulum
释义	simple pendulumn. Brit. /ˌsɪmpl ˈpɛndjᵿləm/, /ˌsɪmpl ˈpɛndʒᵿləm/, U.S. /ˌsɪmpəl ˈpɛndʒələm/, /ˌsɪmpəl ˈpɛndjələm/ Origin: Formed within English, by compounding. Etymons: simple adj., pendulum n. Etymology: < simple adj. + pendulum n. 1. A pendulum consisting only of a bob suspended by a cord or wire, spec.: (a) (in a clock) one which is not equipped with a mechanism that compensates for the effects of heat, friction, etc.; †(b) one which is not a part of a mechanism and is designed to approximate an ideal pendulum (see sense 2) for use in measuring gravity or oscillatory phenomena (obsolete). ΘΚΠ the world > time > instruments for measuring time > clock > [noun] > pendulum clock > pendulum pendule1660 pendulum1660 simple pendulum1673 bob-pendulum1685 swing1696 quicksilver pendulum1726 pendle1741 gridiron pendulum1751 mercurial pendulum1786 gridiron1793 wanrest1794 seconds pendulum1795 conical pendulum1813 ticker1821 noddy1844 1673 Philos. Trans. (Royal Soc.) 8 6069 A simple Pendulum being no Certain and Equal Measure of time, in regard that larger excursions are observ'd to be slower than the narrower. 1688 R. Waller tr. Meas. Earth xii. 5 in A. Pitfield tr. C. Perrault Mem. Nat. Hist. Animals 'Tis commonly known, that to make a simple Pendulum, a little ball about the bigness of a Musquet Bullet, is suspended by a very flexible thread, and the length of this Pendulum must be measured from the top of the thread to the center of the Ball. 1795 C. Hutton Math. & Philos. Dict. II. 210 Simple Pendulum, and Detached Pendulum, are terms sometimes used to denote such Pendulums as are not connected with any clock, or clock-work. 1862 H. Worms Earth & its Mechanism iv. 45 The clock-work is set in motion, and the simple pendulum also. 1975 D. Howse Greenwich Observatory III. xi. 127 Before 1726 he acquired two more clocks from Graham, with dead-beat escapements and simple pendulums, for £12 each. 2004 R. J. Matthys Accurate Clock Pendulums i. 4 A common rate adjustment scheme for simple pendulums is to slide the top end of the suspension spring up and down through a narrow slot. 2. A theoretical or ideal pendulum, consisting of a single point that has mass but no extent, is suspended by a massless inextensible rod, and moves without friction. ΘΚΠ the world > space > relative position > support > hanging or suspension > [noun] > that which hangs or is suspended > a pendulum > types of compound pendulum1723 simple pendulum1728 inverted pendulum1773 horizontal pendulum1775 conical pendulum1813 spherical pendulum1862 the world > movement > motion in specific manner > alternating or reciprocating motion > oscillation > [noun] > swinging or oscillation of suspended body > that which > pendulum > types of compound pendulum1723 simple pendulum1728 inverted pendulum1773 horizontal pendulum1775 conical pendulum1813 spherical pendulum1862 1728 E. Chambers Cycl. at Pendulum Simple Pendulum, is that consisting of a single Weight..considered as a point. 1864 Proc. Royal Soc. 1863–4 13 392 When the motion of the particles of air follows the law of oscillation of a simple pendulum, the resulting sound may be called a simple tone. 1948 A. L. Rawlings Sci. Clocks & Watches (ed. 2) iii. 26 For the present we will disregard the stiffness of the suspension spring and the mass of the rod; that is to say, we will suppose we have what is called a simple pendulum. 2010 C. Roberts Ordinary Differential Equations iv. 200 A simple pendulum can be modelled by a second order homogeneous linear differential equation with constant coefficients. This entry has been updated (OED Third Edition, September 2019; most recently modified version published online March 2022). < n.1673
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