How to make a leyden jar
Choose a jar.
You have to be careful about what materials you use to construct your leyden jar. The material must serve as an insulator between the inner charge (+) and the outer charge (-).

Choose a glass jar or a plastic bottle with a lid. If possible, get a big jar or bottle, such as one that holds 0.5 to 1 gallon (1.9 to 3.8 l).

A man holds a yellow canister as he clears a wood board. he

sprays the wood with the yellow canister.

How to start an account on yelp (for businesses )
Go to the yelp for business owners signup page.
Check to make sure if your business is already on yelp by entering your business name and an address that can include a specific street address, neighborhood, city, state, or zip/postal code.
Click the " search " button to see if your business is already listed in yelp's search results.

Scroll to the bottom of the page and click the " add your business to yelp " link. Select your country using the drop down menu.

How to make a first aid kit for camping
Make a decision about size.
The size of a first aid kit depends on how it is being used, and how many people will use it. In general, if your fist aid is coming with you on a camping excursion it should be big enough to stock adequate supplies for everyone in attendance but also lightweight and portable.
If you're backpacking alone or with one or two other people, keep it on the smaller side as the less items in your backpack the better. Added weight can cause back strain and fatigue that can interfere with your journey.