8 Inches Black Antique Solid Brass Periscope, Vintage Marine Unique Design - Made for Royal Navy LONDON-1917, Fully Functional Educational Periscope (Replica)

SIFAAT WORLD 8'' Black Antique Solid Brass PERISCOPE with Beautiful Wooden Box, Made For Royal Navy LONDON-1917, Fully Functional Educational Periscope (Replica) A Periscope is an Optical Instrument that is used to see Objects which are not at the Same level as of Observer . Principle of the Periscope : ★ In a Periscope, light from an object strikes the top Prism at 45° and bounces off at the same angle to reach the bottom prism. ★ It works on the principle of total internal reflection (T.I.R.) of the light phenomenon. In Periscope, We use the totally reflecting prisms which turn the ray through 90°. Uses Of Periscopes : ★ Periscopes uses prisms providing magnification operate on Submarines and in various fields of Science. ★ People first started using Periscope in submarines to allow sailors to see above the Water. How this Periscope Works ? ★ Inside this Periscope There are 2 Prisms that are Placed in Parallel and Facing Each Other. Also, there are 2 Mirrors that are Fixed near the Observer's Eye and on the Other End. ★ The 2 Prisms in this Periscope are Placed at 45° degree angle. ★ According to the laws of Reflection, When a ray of light falls on a plane surface. it gets reflected at an angle equal to incident angle.★ The Reflected light falls on second prisms and is again reflected. Hence, the first prism captures the desired image and reflects surface of second Prism.★ In turn, the Second Mirror Reflects the image in a way that it can be viewed by the Observer. Sold & Manufactured By SIFAAT WORLD from INDIA.

• HANDMADE UNIQUE ITEM WITH ELEGANT DESIGN : This is a Handcrafted Item First Time Designed by our 20 Years Experienced INDIAN Craftsman.<b> A Periscope is an Optical Instrument that is used to see Objects which are not at the Same level as of Observer. </b>
• EXCELLENT GIFT : This is a Fully Functional & Working Antique Brass Periscope Comes with Engraved Wooden Box. A Beautiful Item to be Gifted to your DAD, SAILOR'S , MILITARY PEOPLE, SHIP WORKER'S,etc. and many more to your LOVED ONES !
• ITEM SPECIFICATIONS : Item Box Dimensions - 25 x 8 x 7.5 cm; Total Weight Of this item with Wooden Box : 1.05 kg/2.32 Pounds ; Periscope Length - 8 Inches / 20cm (approx.) ; Weight of Periscope Only : 0.65kg / 1.4 Pounds.
• MATERIAL USED : This Antique Item is Made of Durable Antique Solid BRASS, 2 - MIRRORS and 2 - PRISMS ; The Diagram to Explain How this Item Works is Engraved on the top of the Wooden Box.
• ENHANCES CREATIVITY : Encourages Nature Exploration And Bird Watching. Introduces Early Science Concepts Related To Mirrors And Optics. Not Sold as an Antique,This is a Reproduction Item.
• DOUBLE PACKAGED : Arrives Carefully in Corrugated Export Packaging To Ensure You Receive It In Perfect Condition.
• Made In INDIA, Loved By The World - Manufactured & Sold by “SIFAAT WORLD” from INDIA.