This presentation illustrates the evolution of bicycles in a very simple style. It is prepared by Thirumoorthy R, Certified Sports Engineer (trainee) at Sports & Management Research Institute (SMRI)
This presentation illustrates the evolution of bicycles in a very simple style. It is prepared by Thirumoorthy R, Certified Sports Engineer (trainee) at Sports & Management Research Institute (SMRI)
Design and fabrication of dual chargeable bicyclesushil Choudhary
With the increase in fuel prices, pollution content in atmosphere and due to gradual end of the non renewable sources
of energy we have to alter the source of our energy in our vehicles. Considering all these reasons we have to switch
over to other sources of energy instead of using conventional sources such as petrol which in future will be going to
extinct. One way to alter the energy source is to go for electric vehicles or e bikes. Electric driven vehicles uses
battery as a source of energy which provide power to motor which in turn provide torque to wheels .The old design
of electric bicycle was having only a single mode of charging, it was just capable to travel 15 km through battery and
was not ergonomically good. The new design uses a low rpm alternator for charging the battery by keeping it in
contact with front wheel .A Motor of 0.5hp provides torque to the rear wheel and the gear ratio is kept 5:2 .battery
discharging time is approximately 2 hrs and charging time through alternator is 1 hour and the bicycle can attain a
maximum speed of 15 km/hr. This work is more beneficial in hilly region and confined areas like college campus
and schools, generating zero pollution, zero noise effect and no fuel consumption.
With the increase in fuel prices, pollution content in atmosphere and due to gradual end of the non renewable sources
of energy we have to alter the source of our energy in our vehicles. Considering all these reasons we have to switch
over to other sources of energy instead of using conventional sources such as petrol which in future will be going to
extinct. One way to alter the energy source is to go for electric vehicles or e bikes. Electric driven vehicles uses
battery as a source of energy which provide power to motor which in turn provide torque to wheels .The old design
of electric bicycle was having only a single mode of charging, it was just capable to travel 15 km through battery and
was not ergonomically good. The new design uses a low rpm alternator for charging the battery by keeping it in
contact with front wheel .A Motor of 0.5hp provides torque to the rear wheel and the gear ratio is kept 5:2 .battery
discharging time is approximately 2 hrs and charging time through alternator is 1 hour and the bicycle can attain a
maximum speed of 15 km/hr. This work is more beneficial in hilly region and confined areas like college campus
and schools, generating zero pollution, zero noise effect and no fuel consumption.
Before we start delving into historical and contemporary examples and minutae such as specific component spec, it is worth making an initial attempt to quantify the defining characteristics of a well designed cycle sportive bicycle. Off the top of my head, I think that a good sportive bike will be charactereized by at least seven definsing characterstics-
The evolution and development of motorcycles from the early beginnings to modern history.
All the important milestones in motorcycle history in a brief infographics - fom first motorcycle prototype to BMW's development of ABS system.
Here you will learn about the rediscovery of the recumbent bicycle after the UCI banned them in 1934 because they were too fast for the conventional upright bicycles they were racing against.
When the 1934 UCI decision turned a very conformist, top-down driven world into believing that a recumbent was not a real bicycle, recumbents disappeared from the mass consciousness for 35 years. Or in other words almost two full generations thought they knew what the bicycle under their Christmas tree was supposed to look like.
Share the history of bicycles with us here at Utah Bicycle Lawyers of Draper , UT. If you or a loved one has been injured in an accident, biking or otherwise we are here to help you get the settlement you deserve.
Design and fabrication of dual chargeable bicyclesushil Choudhary
With the increase in fuel prices, pollution content in atmosphere and due to gradual end of the non renewable sources
of energy we have to alter the source of our energy in our vehicles. Considering all these reasons we have to switch
over to other sources of energy instead of using conventional sources such as petrol which in future will be going to
extinct. One way to alter the energy source is to go for electric vehicles or e bikes. Electric driven vehicles uses
battery as a source of energy which provide power to motor which in turn provide torque to wheels .The old design
of electric bicycle was having only a single mode of charging, it was just capable to travel 15 km through battery and
was not ergonomically good. The new design uses a low rpm alternator for charging the battery by keeping it in
contact with front wheel .A Motor of 0.5hp provides torque to the rear wheel and the gear ratio is kept 5:2 .battery
discharging time is approximately 2 hrs and charging time through alternator is 1 hour and the bicycle can attain a
maximum speed of 15 km/hr. This work is more beneficial in hilly region and confined areas like college campus
and schools, generating zero pollution, zero noise effect and no fuel consumption.
With the increase in fuel prices, pollution content in atmosphere and due to gradual end of the non renewable sources
of energy we have to alter the source of our energy in our vehicles. Considering all these reasons we have to switch
over to other sources of energy instead of using conventional sources such as petrol which in future will be going to
extinct. One way to alter the energy source is to go for electric vehicles or e bikes. Electric driven vehicles uses
battery as a source of energy which provide power to motor which in turn provide torque to wheels .The old design
of electric bicycle was having only a single mode of charging, it was just capable to travel 15 km through battery and
was not ergonomically good. The new design uses a low rpm alternator for charging the battery by keeping it in
contact with front wheel .A Motor of 0.5hp provides torque to the rear wheel and the gear ratio is kept 5:2 .battery
discharging time is approximately 2 hrs and charging time through alternator is 1 hour and the bicycle can attain a
maximum speed of 15 km/hr. This work is more beneficial in hilly region and confined areas like college campus
and schools, generating zero pollution, zero noise effect and no fuel consumption.
Before we start delving into historical and contemporary examples and minutae such as specific component spec, it is worth making an initial attempt to quantify the defining characteristics of a well designed cycle sportive bicycle. Off the top of my head, I think that a good sportive bike will be charactereized by at least seven definsing characterstics-
The evolution and development of motorcycles from the early beginnings to modern history.
All the important milestones in motorcycle history in a brief infographics - fom first motorcycle prototype to BMW's development of ABS system.
Here you will learn about the rediscovery of the recumbent bicycle after the UCI banned them in 1934 because they were too fast for the conventional upright bicycles they were racing against.
When the 1934 UCI decision turned a very conformist, top-down driven world into believing that a recumbent was not a real bicycle, recumbents disappeared from the mass consciousness for 35 years. Or in other words almost two full generations thought they knew what the bicycle under their Christmas tree was supposed to look like.
Share the history of bicycles with us here at Utah Bicycle Lawyers of Draper , UT. If you or a loved one has been injured in an accident, biking or otherwise we are here to help you get the settlement you deserve.
# Internet Security: Safeguarding Your Digital World
In the contemporary digital age, the internet is a cornerstone of our daily lives. It connects us to vast amounts of information, provides platforms for communication, enables commerce, and offers endless entertainment. However, with these conveniences come significant security challenges. Internet security is essential to protect our digital identities, sensitive data, and overall online experience. This comprehensive guide explores the multifaceted world of internet security, providing insights into its importance, common threats, and effective strategies to safeguard your digital world.
## Understanding Internet Security
Internet security encompasses the measures and protocols used to protect information, devices, and networks from unauthorized access, attacks, and damage. It involves a wide range of practices designed to safeguard data confidentiality, integrity, and availability. Effective internet security is crucial for individuals, businesses, and governments alike, as cyber threats continue to evolve in complexity and scale.
### Key Components of Internet Security
1. **Confidentiality**: Ensuring that information is accessible only to those authorized to access it.
2. **Integrity**: Protecting information from being altered or tampered with by unauthorized parties.
3. **Availability**: Ensuring that authorized users have reliable access to information and resources when needed.
## Common Internet Security Threats
Cyber threats are numerous and constantly evolving. Understanding these threats is the first step in protecting against them. Some of the most common internet security threats include:
### Malware
Malware, or malicious software, is designed to harm, exploit, or otherwise compromise a device, network, or service. Common types of malware include:
- **Viruses**: Programs that attach themselves to legitimate software and replicate, spreading to other programs and files.
- **Worms**: Standalone malware that replicates itself to spread to other computers.
- **Trojan Horses**: Malicious software disguised as legitimate software.
- **Ransomware**: Malware that encrypts a user's files and demands a ransom for the decryption key.
- **Spyware**: Software that secretly monitors and collects user information.
### Phishing
Phishing is a social engineering attack that aims to steal sensitive information such as usernames, passwords, and credit card details. Attackers often masquerade as trusted entities in email or other communication channels, tricking victims into providing their information.
### Man-in-the-Middle (MitM) Attacks
MitM attacks occur when an attacker intercepts and potentially alters communication between two parties without their knowledge. This can lead to the unauthorized acquisition of sensitive information.
### Denial-of-Service (DoS) and Distributed Denial-of-Service (DDoS) Attacks
Bridging the Digital Gap Brad Spiegel Macon, GA Initiative.pptxBrad Spiegel Macon GA
Brad Spiegel Macon GA’s journey exemplifies the profound impact that one individual can have on their community. Through his unwavering dedication to digital inclusion, he’s not only bridging the gap in Macon but also setting an example for others to follow.
APNIC Foundation, presented by Ellisha Heppner at the PNG DNS Forum 2024APNIC
Ellisha Heppner, Grant Management Lead, presented an update on APNIC Foundation to the PNG DNS Forum held from 6 to 10 May, 2024 in Port Moresby, Papua New Guinea.
This 7-second Brain Wave Ritual Attracts Money To You.!nirahealhty
Discover the power of a simple 7-second brain wave ritual that can attract wealth and abundance into your life. By tapping into specific brain frequencies, this technique helps you manifest financial success effortlessly. Ready to transform your financial future? Try this powerful ritual and start attracting money today!
1.Wireless Communication System_Wireless communication is a broad term that i...JeyaPerumal1
Wireless communication involves the transmission of information over a distance without the help of wires, cables or any other forms of electrical conductors.
Wireless communication is a broad term that incorporates all procedures and forms of connecting and communicating between two or more devices using a wireless signal through wireless communication technologies and devices.
Features of Wireless Communication
The evolution of wireless technology has brought many advancements with its effective features.
The transmitted distance can be anywhere between a few meters (for example, a television's remote control) and thousands of kilometers (for example, radio communication).
Wireless communication can be used for cellular telephony, wireless access to the internet, wireless home networking, and so on.
1. A brief history of the electric bike
Today, let’s talk about some important cut-off points in the history of bicycles and electric bicycles.
2.
3. Late 18th century
As early as 1790, Sivrak, the Frenchman, has invented the world's first bicycle. The body of the
bicycle is wooden and the structure is relatively simple, with no drive or steering. In order to ride,
you need to rely on the rider's feet to move forward, turn, and need to get off the car to change
the direction of the ride. Despite this, the appearance of this bicycle caused quite a stir at the time.
Early 19th century
By the beginning of the 19th century, the world’s first truly practical bicycles appeared.
During this period, it was also a few twists and turns. First, the wooden two-wheeled bicycle with
handlebars appeared in 1817, and the pedal-driven bicycle invented by British Macmillan in 1839.
The Renault-type bicycle born in 1869 was called "1886". "The father of bicycles" mechanical
engineer Starley, designed a new bicycle style, opening up a broad road for the mass production
and promotion of bicycles. Finally, in 1874, the Englishman Lawson put on the chain and sprocket
on the bicycle and used the rotation of the rear wheel to push the car forward. Although it is still
not coordinated and stable, it also means the birth of a bicycle with a modern form.
4. Late 19th century
By 1895, Ogden Bolton invented the direct-drive wheeled electric vehicle, and he became the first
person to patent a battery-powered bicycle. This is a 10 volt / 100 amp, single speed electric bike
with a DC hub motor.
Turn of the 20th century
5. At the turn of the twentieth century, rear-wheel and belt drive patented by Mathew J. Steffens,
electric bicycles, and the “roller-type rear-wheel friction-driven electric bicycle” patented by John
Schnepf appeared. The emergence of these devices and bicycles is destined to be a significant
turning point. In the next few decades, they are used in roller coaster brakes, generator lighting,
and transmission gear systems.
In the 20th century
After the turn of the 20th century, Hosea W. Libbey combined the "booster" battery and the dual
motor to form the bike called "Libby." His original design was a crank-and-claw system, but it was
quickly replaced by a chain drive, so the bike appeared very short. But the design concept of the
Libby bike is perfect, which has become part of the revival of the booster bike in the 1990s.
Later, Jesse D. Tucker developed the first patented freewheeling motor. This motor was used by
bicycles and electric-powered bicycles in 1946. Cyclists can combine pedals, motors or combine
two power modes.
6. Late 20th century
The "Zike" in 1992 was the first electric bicycle to be launched. It has an integrated nickel-cadmium
battery system and an 850-gram permanent magnet motor.
In 1993, the first crank-driven "electric bicycle" bicycle appeared. This has led to an increase of 35%
of bicycle sales in the next decade.
7. Nowadays, Antlerslane have released a new brand with vintage design for you, hoping it will give
you special choice under variety E-bike market.