div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imagea href=https:reader043vdocumentssitereader043viewer20220219165e24e9f856897f2f864d2498html5page1jpg target=_blank img data-url=injntu-interferometer-mercury-vapour-lamp-is-used-as-light-source-npl-flatnesshtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: INJNTU · interferometer mercury vapour lamp is used as light source--NPL flatness Q In NPL flatness interferometer vapour lamp is used as light —beam splitter Q The light loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentssitereader043viewer20220219165e24e9f856897f2f864d2498html5thumbnails1jpg width=140 height=200 adivpINJNTUCOMp pINJNTUCOM INJNTUCOMINJNTUCOMp div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadiv div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadiv div 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splitter Q The light loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentssitereader043viewer20220219165e24e9f856897f2f864d2498html5thumbnails4jpg width=140 height=200 adivpINJNTUCOMp pINJNTUCOM INJNTUCOMINJNTUCOMp div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadiv div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadiv div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadiv div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadivdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imagea href=https:reader043vdocumentssitereader043viewer20220219165e24e9f856897f2f864d2498html5page5jpg target=_blank img data-url=injntu-interferometer-mercury-vapour-lamp-is-used-as-light-source-npl-flatnesshtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: INJNTU · interferometer mercury vapour lamp is used as light source--NPL flatness Q In NPL flatness interferometer vapour lamp is used as light —beam splitter Q The light loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader043vdocumentssitereader043viewer20220219165e24e9f856897f2f864d2498html5thumbnails5jpg width=140 height=200 adivpINJNTUCOMp pINJNTUCOM INJNTUCOMINJNTUCOMp div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadiv div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadiv div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadiv div class=annotationa href=INJNTUCOM rel=ugc nofollow target=_blankINJNTUCOMadivdiv