Primary sources include autobiographies, memoirs, and recorded oral histories. Primary sources provide first hand testimony or direct evidence concerning a topic under investigation. They are created by witnesses or recorders who experienced the events or conditions being documented.
Examples of primary sources are speeches,letter,journals,court decisions,interviews,trade journals,reports and photographs.
The three classifications of sources of information are primary sources, secondary sources, and tertiary sources. Primary sources offer firsthand accounts or original data, secondary sources analyze and interpret primary sources, and tertiary sources provide summaries and overviews of information from primary and secondary sources.
1) Direct talk with the primary sources 2)Telephonic interaction 3) Email information gathering 4) Recordings of repository data taken by previous researchers
The few examples of light sources are : 1) lamp 2)car headlights 3)candle 4)bulb
1) Internet 2) Telephone 3)Colleagues :) On a more serious note, these are actually the mostly used sources of information. 1) Internet : Several facilities like RSS feeds, newsgroups etc provide latest content of interest. 2) Telephone : You can call as well as receive information on calls from various sources including the Support people/ Call centres etc. 3)Colleagues :) This is one of the sources that provides information which is instantaneously useful.
Coal, oil, and natural gas are the main three nonrenewable primary energy sources.
Diary...Interview...historical documents
Nuclear energysolar energynatural gas energy
Spark, heat, & lightning.
Amanda rocks my socks <3
Physical evidence such as DNA, fingerprints, and weapons. Witness statements from individuals who may have information or have seen the crime occur. Digital evidence such as surveillance footage, phone records, and electronic communication data.
Some examples are: - Alfa Aesar - Merck Millipore - SigmaAldrich
You can identify sources of accurate and reliable information by looking for references (like in the back of a report), you can also look at the primary information and corss check various sources for information matches.