Page 28 - e-Module Berbasis Problem Based Learning pada Materi Koloid

K e g i a t a n B e l a j a r 2
K e g i a t a n B e l a j a r 2

INVESTIGASI

Investigasi Mandiri : Ulasan Materi

EFEK TYNDALL

G e j a l a p e n g h a m b u r a n s i n a r o l e h p a r t i k e l k o l o i d d i s e b u t

e f e k T y n d a l l . E f e k T y n d a l l d i k e m u k a k a n o l e h J o h n

T y n d a l l ( 1 8 2 0 - 1 8 9 3 ) , s e o r a n g a h l i f i s i k a d a r i I n g g r i s . E f e k

T y n d a l l d a p a t d i g u n a k a n u n t u k m e m b e d a k a n c a m p u r a n

y a n g b e r s i f a t l a r u t a n d a n y a n g b e r s i f a t k o l o i d , s e b a b

l a r u t a n t i d a k m e n u n j u k k a n e f e k T y n d a l l . J i k a s o r o t a n

c a h a y a y a n g k u a t d i l e w a t k a n p a d a s u a t u k o l o i d , m a k a

a k a n t a m p a k h a m b u r a n s i n a r d a r i k o l o i d t e r s e b u t .

D a l a m k e h i d u p a n s e h a r i - h a r i ,

e f e k T y n d a l l d i j u m p a i p a d a

p e r i s t i w a b e r i k u t :
T e r l i h a t n y a c a h a y a l a m p u

k e n d a r a a n d i j a l a n y a n g

b e r d e b u d i m a l a m h a r i .
Sumber: The Molecular Nature of Matter
and Change
C a h a y a m a s u k d a l a m s u a t u
r u a n g a n m e l a l u i c e l a h d i

d i n d i n g .
Berkas cahaya Berkas cahaya
tidak terlihat terlihat

Senter

Larutan Sejati
Koloid
(air)
Sumber: Essentials of Physical Chemistry
Sumber: The Molecular Nature of
Matter and Change
17