Objects and Plane-Mirror ImagesIf y

Objects and Plane-Mirror Images
If you looked at yourself in a mirror this morning you saw your reflection
in a plane mirror. A plane mirror is a flat, smooth surface from which
light is reflected by specular reflection. To understand reflection from a
mirror, you must consider the object of the reflection and the type of
image that is formed. In Chapter 16, the word object was used to refer to
sources of light. In describing mirrors, the word object is used in the same
way, but with a more specific application. An object is a source of light
rays that are to be reflected by a mirrored surface. An object can be a
luminous source, such as a lightbulb, or an illuminated source, such as
a girl, as shown in Figure 17-4. Most objects that you will work with
in this chapter are a source of light that diverges, or spreads out from
the source.
Consider a single point on the bird in Figure 17-5. Light reflects diffusely
from the crest of the bird, the object point. What happens to the
light? Some of the light travels from the bird to the mirror and reflects.
What does the boy see? Some of the reflected light from the bird hits
his eyes. Because his brain processes this information as if the light has
traveled a straight path, it seems to the boy as if the light had followed
the dashed lines. The light seems to have come from a point behind the
mirror, the image point.
The boy in Figure 17-5 sees rays of light that come from many points
on the bird. The combination of the image points produced by reflected
light rays forms the image of the bird. It is a virtual image, which is a type
of image formed by diverging light rays. A virtual image is always on the
opposite side of the mirror from the object. Images of real objects produced
by plane mirrors are always virtual images.

Hasil (Bahasa Indonesia) 1:

Objek dan gambar cermin pesawatJika Anda melihat diri sendiri di cermin pagi ini Anda melihat refleksi Andadalam pesawat cermin. Sebuah pesawat cermin adalah datar, halus permukaan yangcahayanya dipantulkan oleh specular refleksi. Untuk memahami refleksi daricermin, Anda harus mempertimbangkan objek refleksi dan jenisgambar yang terbentuk. Dalam Bab 16, objek kata yang digunakan untuk merujuk kepadasumber cahaya. Dalam menggambarkan cermin, objek kata yang digunakan dalam samacara, tetapi dengan aplikasi yang lebih spesifik. Objek adalah sumber cahayasinar yang dicerminkan oleh permukaan cermin. Sebuah objek dapatsumber bercahaya, misalnya bohlam lampu, atau sumber yang diterangi, sepertiseorang gadis, seperti yang ditunjukkan dalam gambar 17-4. Kebanyakan benda-benda yang Anda akan bekerja dengandalam bab ini adalah sumber cahaya yang ada, atau menyebar keluar darisumber.Mempertimbangkan satu titik pada burung dalam gambar 17-5. Cahaya mencerminkan difusdari puncak burung, titik objek. Apa yang terjadicahaya? Beberapa cahaya perjalanan dari burung ke cermin dan mencerminkan.Apa anak Lihat? Beberapa cahaya pantulan dari hits burungmatanya. Karena otak memproses informasi ini seolah-olah cahaya telahbepergian jalan yang lurus, tampaknya untuk anak laki-laki seolah-olah cahaya telah mengikutigaris putus-putus. Cahaya nampaknya telah datang dari titik di belakangcermin, titik gambar.Anak laki-laki dalam gambar 17-5 melihat sinar yang datang dari banyak poinon the bird. The combination of the image points produced by reflectedlight rays forms the image of the bird. It is a virtual image, which is a typeof image formed by diverging light rays. A virtual image is always on theopposite side of the mirror from the object. Images of real objects producedby plane mirrors are always virtual images.