In an instant, however, view point of, whereas, in order to, no matter,

In addition, regardless of, unfortunately.

Task 7. Complete the tables. Use the words from the text. Pay attention to the part of speech. Translate all words.

Noun	Adjective		Noun	Verb
reality	1		11	add
2	intense		magnification	12
reflection	3		13	interfere
4	different		illumination	14
practice	5		elimination	15
6	prevalent		16	develop
refraction	7		creation	17
8	dimensional		18	direct
accuracy	9		reflection	19
responsibility	10		maintenance	20
			21	distort
			composition	22
			interaction	23
			location	24
			generation	25

Recommended function

Study Function 8 “HOW TO make comparison and contrast” and compare 3D holography with 2D photography.

Listening

You are going to watch a video “Fun properties of Hologram”.

Task 1. Make sure you know these words.

fringe pattern, laser pointer, appreciate, semicircular line, film, swirls, interference, diffraction, width, slit, gap, scaling, grains of sand, propagate, wavelength, path length, polarize, phase difference, coherent light, split, reflection, value, line up

Task 2. Match the terms and their definitions.

fringe pattern	the process by which a beam of light or other system of waves is spread out as a result of passing through a narrow aperture or across an edge, typically accompanied by interference between the wave forms produced
diffraction	the picture which shows the behavior of interference
coherent light	the relationship in time between the cycles of a light or sound wave and either a fixed reference point or the cycles of another system with which it may or may not be in synchrony
interference	light waves that are "in phase" with one another
phase	the combination of two or more electromagnetic waveforms to form a resultant wave in which the displacement is either reinforced or cancelled
pathlength	the overall length of the path followed by a light ray or sound wave.

Task 3. Match the parts of the sentences based on the video. Then watch again and check.

If the light is in-phase,	we’ll see less light reflecting.
If the light is out-of-phase,	the image gets bigger.
If you change the pathlength,	we’ll see brighter reflections.
If you don’t have a stable base for the hologram,	you’ll see that image is moving around for different angles.
If you change the width of the slit,	fringe patterns will be moving.
If you move the laser pointer around,	you change the properties of interference patterns.
If I pull the plate back,	the phase will change too.

Task 4. Complete the table with appropriate words from the video.

/ə’pri:ʃɪeɪt/		/semi’sɜ:kjələ(r)/
/’pɑ:θleŋθ/		/’pəʊləraɪz/
/kə(ʊ)’hɪər(ə)nt/		/vju:/
/vaɪ’breɪʃ(ə)n/		/bleɪd/
/frɪn(d)ʒ/		/’æŋg(ə)l/
/swз:l/		/’prɔpəgeɪt/

Task 5. Decode the following parts of the recording.

1. 00.01 “Kids today probably don’t appreciate holograms…” – 01.01 “… we’ll see less light reflecting.”

2. 01.02 “On the bottom left there’s a green laser pointer … ” – 02.07 “… on vibration damping tables.”

3. 02.08 “This is a configuration …” – 02.54 “… how we view them with diffraction.”

4. 02.55 “To demonstrate diffraction …” 03.43 “… you can see the image.”

5. 03.44 “For the longest time I didn’t understand …” – 04.28 “… I can project clear across the room.”

Speaking

Prepare a talk about one use of Holographic technology.

Writing

Study Function 16 “HOW TO deal with neologisms” and write out all neologisms you have come across while doing this English course.