Heat and Temperature Professor Dave Explains English Indonesian

Heat and TemperatureYouTube↗ IA↗(long shot)
Education 122.4K views 1.6K likes 79 dislikes 23 Mar 2017

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Professor Dave here, let's talk about heat.

Profesor Dave disini, ayo bahas soal Kalor

We are all quite

familiar with the concept of heat and

tahu dengan konsep kalor dan

can describe the sensation of feeling

dapat menjelaskan sensasi

too hot or too cold, but understanding

panas atau dingin, tetapi memahami

what things like heat and temperature

apa itu sebenarnya panas (kalor) dan temperatur

really are on the molecular level can be

harus dari level molekul

pretty tricky business.

yang susah-susah gampang

Nevertheless, we must fundamentally

Meskipun demikian, kita harus

understand them as a prerequisite to

mempelajari dari dasar sebagai awalan untuk

learning about thermodynamics so let's

belajar tentang termodinamika. Jadi mari

dig into this abstract concept. We can

pelajari konsep abstrak ini. Kita mulai

start with temperature, like the

dari temperatur, seperti

temperature outside today. It might be hot,

temperatur di luar hari ini. Mungkin panas,

it might be cold, but in science we want

itu mungkin dingin, tetapi dalam sains kita ingin/harus

to quantify everything that we can so

mengukur semua hal yang sebelumnya kita nyatakan

saying something is hot or cold just

sebagai sesuatu yang panas atau dingin yang tentu saja

isn't enough. We want to be able to say

tidak cukup. Kita ingin sebutan panas

how hot or cold with numbers. But that

atau dingin itu dinyatakan dengan angka. Tapi apapun itu,

begs the question, what is it that

Apakah sebenarnya

temperature is physically measuring?

yang diukur dari temperatur?

Temperature is measuring the amount of

Temperatur adalah ukuran dari jumlah

heat energy available for work in a

energi panas yang tersedia untuk bekerja pada sebuah

system and heat energy is related to the

sistem dan panas tersebut terkait dengan

average kinetic energy of the atoms and

energi kinetik rata-rata atom dan

molecules within that system. We know

molekul dalam sistem tersebut. Kita tahu

that greater kinetic energy means

bahwa energi kinetik yang lebih besar berarti

objects will move faster and this is

objek akan bergerak lebih cepat dan ini

true of molecules in the atmosphere just

berlaku pada molekul-molekul di atmosfer hanya

as it is of macroscopic objects, so

karena merupakan objek makroskopik, jadi

higher temperatures simply means faster

temperatur yang lebih tinggi berarti lebih cepat

moving particles. This kinetic energy of

partikel bergerak. Energi kinetik dari

motion is distributed amongst

gerak didistribusikan di antara

translational or side-to-side motion

gerakan translasi atau gerakan sisi ke sisi

rotational or spinning motion and

gerakan rotasi atau gerakan berputar dan

vibrational motion where the covalent

gerakan vibrasi, di mana ikatan

bonds in a molecule bend and stretch.

kovalen molekul melengkuk dan meregang.

Heat will flow from hot objects to cool

Panas (kalor) akan mengalir dari benda panas ke benda yang dingin

objects because as the particles move

karena saat partikel sedang bergerak,

they will impart some of their kinetic

partikel akan memberikan energi kinetiknya

energy onto other particles through

ke partikel lain melalui

collisions. This will continue to occur

peristiwa tumbukan. Ini akan terus terjadi

until the whole system is that the same

hingga seluruh sistem memiliki

temperature in a state called thermal

temperatur yang sama, dalam keadaan yang disebut

equilibrium. This is how thermometers

keseimbangan termal. Beginilah bagaimana termometer

measure temperature. Heat from the

mengukur temperatur. Kalor dari

environment will be in contact with the

lingkungan akan berkontak dengan

thermometer and flow into the

termometer dan mengalir ke dalam

thermometer fluid causing the atoms to

cairan termometer yang menyebabkan atom-atom menjadi

gain kinetic energy and the column will

meningkat energi kinetiknya dan kolom termometer akan

expand until it is in thermal

naik hingga terjadi

equilibrium with the environment

keseimbangan termal dengan lingkungan

thus allowing us to read the temperature

sehingga memungkinkan kita untuk membaca temperatur

in one of our man-made units. We must

di salah satu unit buatan manusia (skala termometer). Kita harus

bear in mind that all phases of matter

ingat bahwa semua benda

expand with higher temperature whether

akan memuai dengan temperatur yang lebih tinggi sekalipun itu

solid liquid or gas.

berwujud, padat, cairan, atau gas.

This phenomenon is called thermal

Fenomena ini disebut ekspansi

expansion. Energy is transferred as heat

termal. Energi ditransfer sebagai kalor

in a wide variety of processes. When a

dalam berbagai macam proses. Ketika sebuah

collision occurs there is usually some

tabrakan terjadi umumnya menghasilkan

heat generated. Friction can cause heat as

kalor. Gesekan bisa menghasilkan kalor seperti

well which is why your hands warm up

saat menggosokan dua telapak tangan

when you rub them together vigorously.

untuk menghasilkan panas.

In each case we are considering the kinetic

Dalam setiap kasus kita mempertimbangkan energi

energy of the particles and the transfer

kinetik partikel dan transfer

of some of this energy to other

energi ke partikel

particles as the definitions of heat and

lain sebagai definisi kalor dan

heat transfer. Heat is therefore a kind

perpindahan energi sebagai kalor. Oleh karena itu kalor merupakan bentuk

of energy in transit, and will be

energi yang sedang berpindah, dan

measured in joules just like any other

diukur dalam joule sama seperti

kind of energy.

jenis energi lain.

Furthermore the transfer of heat energy

Selanjutnya transfer energi kalor

will always alter the temperature of an

akan selalu mengubah temperatur sebuah

object, as heat will always flow from the

benda, karena kalor akan selalu mengalir dari

higher temperature object to the lower

temperatur yang lebih tinggi ke temperatur yang

temperature object until thermal

yang lebih rendah hingga keseimbangan

equilibrium is reached.

termal tercapai.

This is why hot objects feel hot and

Inilah sebabnya mengapa benda panas terasa panas dan

cold object feel cold, because a hot cup

benda dingin terasa dingin, seperti secangkir kopi

of coffee, which is hotter than your hand

panas, yang lebih panas dari tangan anda

will transfer heat into your hand while

akan mentransfer kalor ke tangan anda

a cold piece of ice, which is colder than

saat sepotong es yang dingin, yang lebih dingin dari

your hand, will cause heat to be

tanganmu, akan menyebabkan panas

transferred out of your hand and into

berpindah dari tangan anda dan masuk ke dalam

the ice. These events produce the hot

es. Kejadian-kejadian ini menghasilkan sensasi panas

and cold sensations we feel in our

dan sensasi dingin yang kita rasakan di dalam diri kita di

day-to-day life. Now that we better

kehidupan sehari-hari. Sekarang kita lebih baik dalam

understand heat and temperature,

memahami kalor dan temperatur,

let's check comprehension.

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