SOME INVENTIONS THAT CHANGED THE WORLD.


SOME INVENTIONS THAT CHANGED THE WORLD


BLOWN GLASS (c.100 B.C.E):


“Blowing allowed for previously unparalleled versatility and speed of manufacture”.

CLAW HAMMER (C.79):


“A  worker may be the hammer’s master, but the hammer still prevails….”

CANNON (C.1128):


“ shells are made of cast iron… and are sent flying toward the enemy camp from an eruptor.”

POCKET WATCH (C.1508):


“Peter Henlein… makes from a little iron a pocket clock with a lot of wheels”.

COMBINATION LOCK (C.1550):


“we ride nonpolluting bicycles to save mankind, but we lock them because we can’t trust mankind.”

MICROSCOPE (c.1590):


“Nature composes some of her loveliest poems for the microscope and the telescope.”

NEWSPAPER (c.1605):


“a news paper consists of just the same number of words, whether there be any news in it or not.”

SPINNING MULE (c.1779)


Clothing, woven cloth, spinning wheel, flying shuttle, spinning jenny, powered loom.

SAFETY MATCH (1844):


“How is it that one careless match can start a forest fire, but it takes a whole box to start a campfire.”

Single – lens Reflex Camera (1861):


See also photography, compound camera lens , film camera, portable ”brownie” camera, 35- MM camera

Spring Tape Measure (1868):


Standard measure, vernier scale,  metric system, SI units

Electrical Generator (1869):


See also public electricity supply, electricity meter

Comments

Post a Comment

please do not enter any spam link in the comment box

Popular posts from this blog

Glaucoma/eye pressure/treatment/surgery/symptoms/causes/tests/sign

Image
            GLAUCOMA Glaucoma overview: glaucoma history what is glaucoma? symptoms and sign glaucoma causes risk factors Screening glaucoma treatment glaucoma tests 1. Glaucoma History:           Glaucoma was first observes by Richard Bannister in 1622. He saw that the eye be grown more tight,strong and concrete. But in 1851 sir Herman Helmholtz  classify or describes the pathological hallmark of glaucoma the optical nerve head due to retinal ganglion cell loss. After some time later research find out  that insufficient blood supply low or irregular blood pressure to the retina and optical nerve head. 2. what is Glaucoma: Glaucoma is a troop of eye infection which event in harm to the optical nerve and outcome vision loss. The biggest common type is open angle glaucoma, in which the sewerage angle for fluid with in the eye remains open but with low common types as well as closed angle glaucoma and normal-tension glaucoma.             Open angle glaucoma
Read more

Foot in human body

Image
                FOOT FOOT • SOLE OF THE FOOT • THICK AND HAIRLESS. • IT IS FIRMLY BOUND DOWN TO THE UNDERLYING DEEP FASCIA BY NUMEROUS FIBROUS BANDS. • THE SKIN SHOWS A FEW FLEXURE CREASES AT THE SITES OF SKIN MOVEMENT. • SWEAT GLANDS ARE PRESENT IN LARGE NUMBERS. FOOT • SENSORY NERVE SUPPLY: • MEDIAL CALCANEAL BRANCH OF THE TIBIAL NERVE - WHICH INNERVATES THE MEDIAL SIDE OF THE HEEL; • BRANCHES FROM THE MEDIAL PLANTAR NERVE- WHICH INNERVATE THE MEDIAL TWO THIRDS OF THE SOLE • BRANCHES FROM THE LATERAL PLANTAR NERVE - INNERVATE THE LATERAL THIRD OF THE SOLE FOOT • DEEP FASCIA • THE PLANTAR APONEUROSIS IS A TRIANGULAR THICKENING OF THE DEEP FASCIA THAT PROTECTS THE UNDERLYING NERVES, BLOOD VESSELS, AND MUSCLES. • ITS APEX IS ATTACHED TO THE MEDIAL AND LATERAL TUBERCLES OF THE CALCANEUM. • THE BASE OF THE APONEUROSIS DIVIDES INTO FIVE SLIPS THAT PASS INTO THE TOES. MUSCLESOF THE FOOT • CHIEFLY CONCERNED WITH SUPPORTING T
Read more

Tattoo effects

Image
Harmful effects of Tattoo 1.       Hepatitis: It is major health risk that you may be subjecting yourself to by getting a tattoo is Hepatitis. Hepatitis is caused by sharing needles that are not sterilized properly after being used on someone else. 2.       Skin Cancer: Tattoo   can also cause skin cancer if they affect your skin and body in extreme ways. A notable number of cases have come up where tattoos have led to melanoma or cancer in the skin cells. 3.       Infections: The tattoo needles harbor more germs than you can imagine. According to a study by the   Tulane University school of Medicine, 3% of all tattoo get infected and people may experience persistent itching or irritation on their tattoos. 4.       Complications in medical procedures: During medical procedures, metal-based tattoo inks may interfere with result of an MRI-Scan or an X-ray and similar tests. It may also lead to swollen skin where the tattoo is or even serious burns.
Read more