5. Home Security System
Marie Van Brittan Brown invented the closed-circuit television security system for home security, and it was patented in 1969. It was developed to help people in times of crime that happened in the New York City neighborhood. It was helpful when the police were not coming in time on the spot. She got help from her husband, who was an electronics technician in developing this security system. This is the predecessor of modern home security systems.
6. Laser Cataract Surgery
Patricia Bath was born in New York City, US, in the year 1942. She was an ophthalmologist, inventor, humanitarian, and academic. She invented Laser Cataract Surgery in the year 1986. Her invention Laserphaco Probe is a surgical tool used to dissolves cataracts quickly and painlessly with lasers’ help. After the surgery, the lens can be easily applied, and this surgery prevents blindness caused by cataracts. It is used worldwide to treat cataract disease.
7. The Fire Escape
In 1887, Anna Connelly patented the exterior fire escape, which is useful in saving life from a dangerous fire. This idea helps the people to escape from the buildings when there was a deadly event like a fire took place.
8. Automatic Dishwasher
Josephine Cochrane invented the first commercial dishwashing machine in 1887. She founded her own manufacturing company Garis-Cochrane Manufacturing to manufacture dishwashing machines. Her invention is currently used in hotels and restaurants.
9. Computer Software
Grace Murray Hopper designed the machine-independent programming language called FLOW-MATIC, from which the COBOL high-level programming language was created. It is the first user-friendly computer software program used in many business applications. She was also the first person to use the term “bug” to describe the problem in processing data in the computer program. But the word “bug” was already coined by Thomas Edison to explain technical problems.