英语

这是一篇关于英语的思维导图。讲述的是电（electricity）的形成内容，可供大家参考学习，有误的地方欢迎大家纠错

electricity

• Getting to know Electricity
  • electrical appliances
    • electric
    • electric wire
    • electric cable
    • wall socket
    • power strip
    • battery
    • battery charger
    • electricity
    • power plug
  • define
    • Electricity is a form of energy that flows like water through power lines and is used to power machines. It is also used for heating and lighting
  • Ways of generating electricity
    • wind turbines
    • PV panels
    • nuclear power
    • water power
• The discovery of electricity
  • kite experiment
    • The experimenter
      • benjamin franklin
    • The weather
      • The thunderstorm day
    • kite
      • tie a metal key to the string
  • term
    • battery
    • conductor
    • condenser
    • charge
    • discharge
    • uncharged
    • positive
    • negative
  • who discovered electricity
    • ancient Greeks
• Electrical Terms
  • current
    • What's current
      • Electric current is the flow of electricity.
    • letters stand for
      • I
  • inductance
    • letters stand for
      • L
    • What's inductance
      • Inductance opposes change in current flow. An inductor, also called a coil, is an electrical device which resists changes in electric current passing through the coil.An inductor, like a capacitor, also stores energy, but in the form of a magnetic field rather getricity. than an electric field. So inductance also means the capability of an inductor to store energy in a magnetic field,
    • units
      • Henre
      • What's capacitor
        • Electrical energy can be stored in an electric field. The device able to do this is called a capacitor or a condenser.
  • capacitor
    • letters stand for
      • C
    • units
      • Farad
  • resistor
    • What's resistor
      • A resistor is an electrical device that resists the flow of electric current.
    • units
      • Ohm
  • resistance
    • What′s resistance
      • Resistance is the opposition to current.
    • letters stand for
      • R
  • voltage
    • What's voltage
      • Voltage is the force to produce electric current.
    • letters stand for
      • U
• Manual
  • Buying a camera
    • Are you shopping for yourself or for someone else?
    • Ah, well. I′d recommend a nice entry-level digital SLR.
    • Yeah, but what kit lens does this camera come with?I don′t want any bulky lenses,
  • Manual for a camera
    • Do not use this camera in locations affected by oil fumes, steam, humidity or dust.
    • Do not leave this camera in places with high temperatures.
    • Keep out of the reach of small children.
    • Do not place heavy objects on the camera.
    • Do not move the camera while the AC power adapter is still connected. Do not pull on the connection cord to disconnect the AC power adapter.
    • Do not use the AC power adapter when the plug is damaged or the plug socket connection is loose.
    • Do not cover or wrap the camera or the AC power adapter in a cloth or blanket.
    • When you are cleaning the camera or you do not plan to use the camera for an extended period, remove the battery and disconnect and unplug the AC power adapter.
    • When charging ends, unplug the charger from the power socket.
    • Using a flash too close to a person's eyes may temporarily affect the eyesight.
    • When a memory card is removed, the card could come out of the slot too quickly. Use your finger to hold it and gently release the card.
    • Request regular internal testing and cleaning for your camera.
    • Remove your fingers from the flash window before the flash fires.
    • Keep the flash window clean and do not use the flash if the window is obstructed.
• Safety First
  • safety rules in the workshop
    • First of all,make sure you stay safe all the time when working with electricity.
    • You′d better apply protective rubber grips to your tools if possible.
    • Remember to switch all tools off before connecting them to a power supply.
    • Nothing is more important than life.
    • The Company will have a safety meeting and send the new employees for safety training in the workshop in a week.
  • Safety Tips for Working with Electicity
    • Know safety requirements and follow them.
    • Understand the construction and operation of the electrical equipment and the hazards involved.
    • Identify all possible electric sources that could cause hazards.
    • Make sure that you never complete a complete circuit of your body for the electricity to run through. For example, whenever you work with live wires, you must do it with one hand whenever possible, which helps to break the electric current.
    • Select the appropriate personal protective equipment (PPE). Remember, PPE must be worn until the electrical system is in a safe condition
    • Never assume that the equipment or system is deenergized. Remember to always fest before you touch.
    • Use Jock-out & tag-out procedures.
    • Make sure your test cquipment is working properly both before and after you use it.
    • If at any time the job becomes more hazardous than you have anticipated, stop and revise the plans.
    • Do not touch a person in the event of an electrical accident. Always disconnect the power source first.
• Electrical Appliances Electronic Devices
  • Buying a refrigerator
    • brand
      • Chinese brand
        • Haier
    • The price
      • How much ia it
        • 5380yuan
    • warranty card
      • warranty for one year.The maintebance store location and telephone numbers are on it.
    • delivered
      • It is free within the city.And we charge for delivery ouside it.
  • Use electrical appliances safely
    • Electric rice cookers
      • To use an eletric rice cooker safely, you should always keep the outside of the pot dry and never leave the pot on when it is empty.
    • Washing manchines
      • When you use a washing machine to wash the clothes, keep these in mind
        • 1.Do not put your hand in the water when it is on.
        • 2.Unplug it when you are not using it.
    • Microwave over
      • Using a microwave oven to heat up or cook food is time-saving. However, you had better take my advice
        • 1.Do not turn it on when it is empty, because it might start a fire.
        • 2.Stand 3 to 4 feet away from the microwave oven when it is on, just to be on the safe side.
        • 3.Do not use metal containers in the microwave oven.
        • 4.Before you use any glass or plastic containers in it, make sure they are“microwave safe” Last but not least, never put the electrical appliances near the fire or anything that may cause fire.
• 徐志珩 董雅辉 郭晓烨 尹祥旭 姜玉霖 贾凤楼