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  • Do not touch the person.
  • Send for adult help.
  • Press the stop button to cut off the mains power.
  • Switch off the appliance at the socket and pull out the plug.
  • If this is not possible, try to push them away from the electricity. Use something made of wood which does not conduct the electricity to you.
  • If you are certain that the power is off, then you can attempt to give the person first aid if you have been trained to do it.
  • If you give yourself a slight electric shock you may feel weak, so relax a bit before carrying on working.

N.B.: Take good care of a person who has been injured. Keep him / her warm, let him / her lie down and call for help.

Safety measures with regard to

Scissors

  • A scissors must be good quality, sharp and in good working order.
  • Never let the tips of the scissors close when cutting a line greater than the length of the blades.
  • When cutting curves always turn the card and not the scissors.

Craft knives

  • Only to be used under very close supervision together with a metal safety ruler.
  • Cut onto a suitable safety surface e.g. Very thick card/ cutting board.
  • Stand when you cut and retract the blade when you need to put it away.
  • The blade should not be to far out.
  • You are allowed with the knife in your hand only when you are going to cut.

Drills

  • You should know how to change twist drills, how to hold the hand drill and how to keep it at right angles to their work.
  • The material to be drilled must be cramped securely.
  • Do not remove the chuck completely as it is very difficult to reassemble.
  • Select the appropriate twist drill – choosing one too small rather than one too big if in doubt.
  • When drilling turn the handle in a clockwise direction and continue turning the same way when removing the drill bit from the hole.
  • Hand drills are for holes up to 6mm in diameter; use a brace and bit for larger holes.
  • Never leave a hand drill lying on a work top as it can so easily fall off and damage the twist drill.

Glue guns

  • Must only be used under very close supervision.
  • It is suitable for wood, metals and certain plastics.
  • When it is switched on and not in use ensure that it is correctly positioned on its stand.
  • Switch off after use.
  • Be careful of glue that drips and put it away after the gun is cooled off.

General

  • When sawing plastics and metals , safety spectacles should be worn, because there is a risk of eye damage.
  • Some plastics become pliable when heated but care must be taken to control the temperature because the burning of plastics is dangerous as many give off poisonous fumes.
  • Polystyrene should be cut with a hot wire cutter set low and used in a well ventilated room.

Soldering irons

  • Soldering irons must be treated with respect. They often use mains electricity and get very hot.

The rules for correct use are as follows:

  1. Do not leave them switched on for possible future use. Always switch them off when not in use, because this will prolong the life of the iron.
  2. Never touch the mains lead with the tip of the iron. It will melt and expose bare wires which could lead to an electric shock.
  3. Always use a proper soldering iron stand. Failure to do so will mean that there is a risk of the hot iron setting fire to things.
  4. Avoid breathing in the resin fumes from the flux.
  5. Protect the work surface with hardboard.

Questions & Answers

Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
At high concentrations (>0.01 M), the relation between absorptivity coefficient and absorbance is no longer linear. This is due to the electrostatic interactions between the quantum dots in close proximity. If the concentration of the solution is high, another effect that is seen is the scattering of light from the large number of quantum dots. This assumption only works at low concentrations of the analyte. Presence of stray light.
Ali Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
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Source:  OpenStax, Technology grade 7. OpenStax CNX. Sep 10, 2009 Download for free at http://cnx.org/content/col11032/1.1
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