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عرض 1936–1950 من أصل 2204 نتائج
Special Human Physiology Charts
Polyart Charts are multicoloured, accurate in details, printed on plastic, laminated on both sides, washable, non-tearable and long lasting, with plastic rollers, size 75 x 100 cm.
1. The Lymphatic System
2. Excretory System – Kidney, L.S.
3. Excretory System – Ureters
4. Excretory System – Urinary bladder
5. Excretory System – Malpighian Corpuscle
6. T.S. Skin
7. Reproductive System
8. Brain External Features
9. L. S. Eye – Eye Muscle
10. L. S. Eye – Tear glands
11. L. S. Eye – Physiological diseases of eye
12. Ear and its parts
13. Skeletal System
14. Endocrine glands
15. Digestive System
16. Circulatory System – Types of blood cells
17. Circulatory System – L. S. in heart & T. S. in blood vessel
18. Circulatory System – Vein valves
19. Circulatory System – Systematic & pulmonary circulation
20. Respiratory System – Larynx
21. Respiratory System – Trachae
22. Respiratory System – Alveolus
23. L. S. in Central Nervous System (CNS)
24. Region in which the nerval impulses transport to central nervous system through the synapse
25. Human Reflection ArchSKU: B13055Spectrometer, Advanced
Vernier reading to 30 seconds of arc. The 175 mm diameter scale is fixed. The table and telescope movements are completely independent of each other and read to 30 seconds of arc by means of double ended verniers and magnifiers. Both rotations have fine adjustment screws. Coarse adjustments can also be made by release of clamping screw. Collimator is mounted on a fixed pillar and is fitted with 175 mm fl. achromatic objective with 32 mm clear aperture and a laterally adjustable slit 6 mm long. Telescope is mounted on a movable pillar fitted with 175 mm fl. achromatic objective of 32 mm clear aperture and x 10 Ramsden eye-piece with a glass cross line graticule. Both the telescope and collimator have rack and pinion focusing and can be adjusted for leveling the axes of both units as well as for adjusting to the axis of rotation. Prism table is marked with lines to assist prism placement and has three table leveling screws. It also has an interchangeable clamping unit for the prism and diffraction grating. Complete with prism clamp, diffraction grating holder and a Tommy bar for adjusting optical axis. In case.
SKU: PH30750Spectrometer, Intermediate
Reads to 1 minute of arc.150 mm diameter Scale with protective cover and acrylic windows to read verniers, is fixed to the telescope movement. The table is attached to double ended verniers reading to 1 minute of arc with magnefiers provided for the purpose . Both telescope and table rotations have fine adjustments. Collimator is on fixed pillar with 175 mm fl achromatic objective of 25 mm aperture and an adjustable slit. The telescope is on a movable pillar with 175 mm achromatic objective x 8 Ramsden eye-piece and glass crossline graticule. Both telescope and collimator have rack and pinion focusssing and their optical axes can also be adjusted. Prism table has lines to assist prism placement hand has three leveling screws. With prism clamp, diffraction grating holder and one tommy bar for axis adjustment, in case
SKU: PH30745Spectrometer, Standard
Reads to 6 minutes of arc (0.1°) 170 mm diameter metal scale graduated 360° x 1°, independently rotatable, with locking screw, vernier attached to the telescope reads to 0.1° (6 minutes of arc). Collimator is mounted on a fixed pillar, with an achromatic objective of 150 mm focal length and 21 mm aperture, and has an adjustable slit 6 mm long. The telescope is on a movable pillar, with a fine adjustment screw, an achromatic objective of 170 mm focal length, 21 mm aperture, Ramsden eye-piece and glass crosswire graticule. Both collimator and telescope have spiral focusing system and have axis adjusting arrangement. The table has 3 leveling screws, with lines marked to assist prism placement. With prism and grating holders, one small screw driver and one Tommy bar for axis adjustment. Without prism.
SKU: PH30738Spectroscope
Hand held simplest form of spectroscope. It can be used to get a general idea of the correlation between wavelength and observed color. A diffraction grating is used which spreads the incident light into its component wavelengths. An illuminated reference scale against which the spectrum may be viewed is also provided.
SKU: PH30727Spectrum Tube Power Supply
Housed in black metal body, specially molded spectrum tube sockets enable the tube to be placed in position easily and also provides protection against electrical contact. Bottom socket is spring loaded for easy tube placement and removal. Holds 26cm spectrum tube.
SKU: PH61025
