It required a pan of water and a means of generating two separate waves, each emanating from a slit in a partition in a tray of water. A linear wave was generated behind the partition and two waves of water emerged through the slits as the wave continued as two waves fanning out in concentric circular patterns.
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In case you wish to contact the HMRC jobcentre plus team to make a new claim for a benefit, you can directly talk to the HMRC customer support team on HMRC jobcentre plus contact number 0800 055 6688 and get your query resolved or send a text on HMRC textphone number 0800 023 4888 for which the staff will be available from 08:00 AM to 06:00 PM from Monday to Friday.